JavaScript - What Is The Difference Between Object.prototype And Function.prototype?

        function Point()
	{
		Point.prototype.x = this._x;
		Point.prototype.y = this._y;
		
		function _setX(x)
		{
			this.x = x;
		}
		Point.prototype.setX = _setX;
		
		
		function _setY(y)
		{
			this.y = y;
		}
		Point.prototype.setY = _setY;
		
		
		function _show()
		{
			alert(this.x + this.y);
		}
		Point.prototype.Show = _show;
	}


	function callMyClass()
	{
		var p = new Point();
		p.setX(3);
		p.setY(5);
		p.Show();
	}

var srcpagParams = $H();
function buildPagi(param, currdsplyNum){
       var temDsply = new Template('<strong>[#{total_display}<span id="count">#{prevImg} #{links} #{nextImg}</span>'),
           crnt_link = srcpagParams.set('crnt_link', param), // the page we want to see
           dsplyNum = srcpagParams.get('paginateNum'), // what is the number of returns per page
           ttl_lnks  = Math.ceil( srcpagParams.get('numFound') / srcpagParams.get('paginateNum')), // total pages
           data_template = new Hash();
           data_template.set('total_display',srcpagParams.get('numFound'));

        bldImg = function() {
              var prvB = '<a href="#content" id="pagiPrev" onclick="firesrc(this)">Prev<img src="blank.gif" /></a>';
              var nxtB = '<a href="#content" id="pagiNext" onclick="firesrc(this)">Next<img src="blank.gif" /></a>';
              data_template.set('prvImg',(crnt_link > 1) ? prvB : "");
              data_template.set('nxtImg',(crnt_link < ttl_lnks) ? nxtB  : "");
       }
        bldLk =  function(){
           var holder = "";
           if(ttl_lnks > 1){
             var linkStr = new Template('&nbsp;&nbsp;<a href="#content" onclick="firesrc(#{pos});"> Go to page #{pos}</a>&nbsp;&nbsp;');
               $R(1,ttl_lnks).each(function(n) {
                  var posit = {pos : n}
                  holder += (crnt_link == n) ? "&nbsp;&nbsp;" + n + "&nbsp;&nbsp;" : linkStr.evaluate(posit);
               });
                  data_template.set('links',linkholder);
           }
        }
        bldRng =  function(){
            var currPaneRg = (dsplyNum * crnt_link) - (dsplyNum - currdsplyNum);
            data_template.set('range',((crnt_link - 1) * (dsplyNum) + 1 ) + " - " + currPaneRg);
             $('pages').update(temDsply.evaluate(data_template)).show();
        }
       firesrc = function(cl){
           var pagiPane = (typeof cl === "number") ? cl : (cl.id == "pagiNext") ? crnt_link + 1 : crnt_link - 1;
           var start = crnt_link * srcpagParams.get('paginateNum');
           Alertsrc( $F('query') ,(pagiPane)) // pass the query to the json to return the current search request
       }
           bldImg();
           buildLnk();
           bldRng();
};


Since some of the data declared at the top changes depending on the return, I didn't know if I could "initialize" it in a class.

But could I turn this into a class and if so - what I just use:

var buildPagi = create.Class({ 
       initialize: object.extend({

        })

})

buildPagi(somevalue, somevalue2)

<div class="product-view">
    <div class="product-essential">
    <form action="http://myhairpalace.com/index.php/default/checkout/cart/add/uenc/aHR0cDovL215aGFpcnBhbGFjZS5jb20vaW5kZXgucGhwL2RlZmF1bHQvaW5kaWFuLXJlbXktZnJvbnQvMTAwLWh1bWFuLWhhaXItbGFjZS1mcm9udC13aWctc3V6aWUuaHRtbD9fX19TSUQ9VQ,,/product/57/" method="post" id="product_addtocart_form" enctype="multipart/form-data">
		<div class="no-display"> 
			<input type="hidden" name="product" value="57� /&gt; 
			&lt;input type=" hidden"="" id="related-products-field" product-shop"="">
            <div class="product-name">
                <h1>100% Human Hair Lace Front Wig-Suzie</h1>
            </div>

                            <p class="email-friend"><a href="http://myhairpalace.com/index.php/default/sendfriend/product/send/id/57/cat_id/11/">Email to a Friend</a></p>
            
                <p class="no-rating"><a href="http://myhairpalace.com/index.php/default/review/product/list/id/57/category/11/#review-form">Be the first to review this product</a></p>
                        
    <p class="availability in-stock">Availability: <span>In stock</span></p>


        
    <div class="price-box">
                                                            <span class="regular-price" id="product-price-57">
                    <span class="price">$75.00</span>                </span>
                        
        </div>

            
            
                            
<ul class="add-to-links">
    <li><a href="http://myhairpalace.com/index.php/default/wishlist/index/add/product/57/" class="link-wishlist">Add to Wishlist</a></li>
    <li><span class="separator">|</span> <a href="http://myhairpalace.com/index.php/default/catalog/product_compare/add/product/57/uenc/aHR0cDovL215aGFpcnBhbGFjZS5jb20vaW5kZXgucGhwL2RlZmF1bHQvaW5kaWFuLXJlbXktZnJvbnQvMTAwLWh1bWFuLWhhaXItbGFjZS1mcm9udC13aWctc3V6aWUuaHRtbD9fX19TSUQ9VQ,,/" class="link-compare">Add to Compare</a></li>
</ul>
            
                            <div class="short-description">
                    <h2>Quick Overview</h2>
                    <div class="std">Suzie</div>
                </div>
            
            
                                        
        </div>

        <div class="product-img-box">
            <p class="product-image product-image-zoom">
    <img id="image" src="http://myhairpalace.com/media/catalog/product/cache/1/image/9df78eab33525d08d6e5fb8d27136e95/l/a/lace_front-shan.jpg" alt="100% Human Hair Lace Front Wig-Suzie" title="100% Human Hair Lace Front Wig-Suzie"></p>
<p class="zoom-notice" id="track_hint">Double click on above image to view full picture</p>
<div class="zoom">
    <img id="zoom_out" src="http://myhairpalace.com/skin/frontend/default/default/images/slider_btn_zoom_out.gif" alt="Zoom Out" title="Zoom Out" class="btn-zoom-out">
    <div id="track">
        <div id="handle"></div>
    </div>
    <img id="zoom_in" src="http://myhairpalace.com/skin/frontend/default/default/images/slider_btn_zoom_in.gif" alt="Zoom In" title="Zoom In" class="btn-zoom-in">
</div>
<script type="text/javascript">
//<![CDATA[
    Event.observe(window, 'load', function() {
        product_zoom = new Product.Zoom('image', 'track', 'handle', 'zoom_in', 'zoom_out', 'track_hint');
    });
//]]>
</script>
<div class="more-views">
    <h2>More Views</h2>
    <ul>
            <li>
            <a href="#" onclick="popWin('http://myhairpalace.com/index.php/default/catalog/product/gallery/id/57/image/56/', 'gallery', 'width=300,height=300,left=0,top=0,location=no,status=yes,scrollbars=yes,resizable=yes'); return false;" title=""><img src="http://myhairpalace.com/media/catalog/product/cache/1/thumbnail/56x/9df78eab33525d08d6e5fb8d27136e95/l/a/lace_front-shan.jpg" width="56" height="56" alt=""></a>
        </li>
        </ul>
</div>
        </div>

        <div class="clearer"></div>
                    <div class="product-options" id="product-options-wrapper">
    <script type="text/javascript">
//<![CDATA[
var DateOption = Class.create({

    getDaysInMonth: function(month, year)
    {
        var curDate = new Date();
        if (!month) {
            month = curDate.getMonth();
        }
        if (2 == month && !year) { // leap year assumption for unknown year
            return 29;
        }
        if (!year) {
            year = curDate.getFullYear();
        }
        return 32 - new Date(year, month - 1, 32).getDate();
    },

    reloadMonth: function(event)
    {
        var selectEl = event.findElement();
        var idParts = selectEl.id.split("_");
        if (idParts.length != 3) {
            return false;
        }
        var optionIdPrefix = idParts[0] + "_" + idParts[1];
        var month = parseInt($(optionIdPrefix + "_month").value);
        var year = parseInt($(optionIdPrefix + "_year").value);
        var dayEl = $(optionIdPrefix + "_day");

        var days = this.getDaysInMonth(month, year);

        //remove days
        for (var i = dayEl.options.length - 1; i >= 0; i--) {
            if (dayEl.options[i].value > days) {
                dayEl.remove(dayEl.options[i].index);
            }
        }

        // add days
        var lastDay = parseInt(dayEl.options[dayEl.options.length-1].value);
        for (i = lastDay + 1; i <= days; i++) {
            this.addOption(dayEl, i, i);
        }
    },

    addOption: function(select, text, value)
    {
        var option = document.createElement('OPTION');
        option.value = value;
        option.text = text;

        if (select.options.add) {
            select.options.add(option);
        } else {
            select.appendChild(option);
        }
    }
});
var dateOption = new DateOption();
//]]>
</script>

    <script type="text/javascript">
    //<![CDATA[
    var optionFileUpload = {
        productForm : $('product_addtocart_form'),
        formAction : '',
        formElements : {},
        upload : function(element){
            this.formElements = this.productForm.select('input', 'select', 'textarea', 'button');
            this.removeRequire(element.readAttribute('id').sub('option_', ''));

            template = '<iframe id="upload_target" name="upload_target" style="width:0; height:0; border:0;"><\/iframe>';

            Element.insert($('option_'+element.readAttribute('id').sub('option_', '')+'_uploaded_file'), {after: template});

            this.formAction = this.productForm.action;

            var baseUrl = 'http://myhairpalace.com/index.php/default/catalog/product/upload/';
            var urlExt = 'option_id/'+element.readAttribute('id').sub('option_', '');

            this.productForm.action = parseSidUrl(baseUrl, urlExt);
            this.productForm.target = 'upload_target';
            this.productForm.submit();
            this.productForm.target = '';
            this.productForm.action = this.formAction;
        },
        removeRequire : function(skipElementId){
            for(var i=0; i<this.formElements.length; i++){
                if (this.formElements[i].readAttribute('id') != 'option_'+skipElementId+'_file' && this.formElements[i].type != 'button') {
                    this.formElements[i].disabled='disabled';
                }
            }
        },
        addRequire : function(skipElementId){
            for(var i=0; i<this.formElements.length; i++){
                if (this.formElements[i].readAttribute('name') != 'options_'+skipElementId+'_file' && this.formElements[i].type != 'button') {
                    this.formElements[i].disabled='';
                }
            }
        },
        uploadCallback : function(data){
            this.addRequire(data.optionId);
            $('upload_target').remove();

            if (data.error) {

            } else {
                $('option_'+data.optionId+'_uploaded_file').value = data.fileName;
                $('option_'+data.optionId+'_file').value = '';
                $('option_'+data.optionId+'_file').hide();
                $('option_'+data.optionId+'').hide();
                template = '<div id="option_'+data.optionId+'_file_box"><a href="#"><img src="var/options/'+data.fileName+'" alt=""><\/a><a href="#" onclick="optionFileUpload.removeFile('+data.optionId+')" title="Remove file" \/>Remove file<\/a>';

                Element.insert($('option_'+data.optionId+'_uploaded_file'), {after: template});
            }
        },
        removeFile : function(optionId)
        {
            $('option_'+optionId+'_uploaded_file').value= '';
            $('option_'+optionId+'_file').show();
            $('option_'+optionId+'').show();

            $('option_'+optionId+'_file_box').remove();
        }
    }
    var optionTextCounter = {
        count : function(field,cntfield,maxlimit){
            if (field.value.length > maxlimit){
                field.value = field.value.substring(0, maxlimit);
            } else {
                cntfield.innerHTML = maxlimit - field.value.length;
            }
        }
    }

    Product.Options = Class.create();
    Product.Options.prototype = {
        initialize : function(config){
            this.config = config;
            this.reloadPrice();
        },
        reloadPrice : function(){
            price = new Number();
            config = this.config;
            skipIds = [];
            $$('.product-custom-option').each(function(element){
                var optionId = 0;
                element.name.sub(/[0-9]+/, function(match){
                    optionId = match[0];
                });
                if (this.config[optionId]) {
                    if (element.type == 'checkbox' || element.type == 'radio') {
                        if (element.checked) {
                            if (config[optionId][element.getValue()]) {
                                price += parseFloat(config[optionId][element.getValue()]);
                            }
                        }
                    } else if(element.hasClassName('datetime-picker') && !skipIds.include(optionId)) {
                        dateSelected = true;
                        $$('.product-custom-option[id^="options_' + optionId + '"]').each(function(dt){
                            if (dt.getValue() == '') {
                                dateSelected = false;
                            }
                        });
                        if (dateSelected) {
                            price += parseFloat(this.config[optionId]);
                            skipIds[optionId] = optionId;
                        }
                    } else if(element.type == 'select-one' || element.type == 'select-multiple') {
                        if (element.options) {
                            $A(element.options).each(function(selectOption){
                                if (selectOption.selected) {
                                    if (this.config[optionId][selectOption.value]) {
                                        price += parseFloat(this.config[optionId][selectOption.value]);
                                    }
                                }
                            });
                        }
                    } else {
                        if (element.getValue().strip() != '') {
                            price += parseFloat(this.config[optionId]);
                        }
                    }
                }
            });
            try {
                optionsPrice.changePrice('options', price);
                optionsPrice.reload();
            } catch (e) {

            }
        }
    }
    function validateOptionsCallback(elmId, result){
        var container = $(elmId).up('ul.options-list');
        if (result == 'failed') {
            container.removeClassName('validation-passed');
            container.addClassName('validation-failed');
        } else {
            container.removeClassName('validation-failed');
            container.addClassName('validation-passed');
        }
    }
    var opConfig = new Product.Options({"80":{"447":0,"448":0,"451":0,"452":0,"449":0,"450":0,"454":0,"453":0}});
    //]]>
    </script>
    <dl>
            <dt><label>Color<span class="required">&nbsp;*</span></label></dt>
<dd class="last">
    <select name="options[80]" id="select_80" class=" required-entry product-custom-option" title="" onchange="opConfig.reloadPrice()"><option value="">-- Please Select --</option><option value="447">1 </option><option value="448">1B </option><option value="451">1B/30 </option><option value="452">1B/33 </option><option value="449">2 </option><option value="450">4 </option><option value="454">4/27 </option><option value="453">4/30 </option></select>            </dd>
        </dl>

<script type="text/javascript">
//<![CDATA[
enUS = {"m":{"wide":["January","February","March","April","May","June","July","August","September","October","November","December"],"abbr":["Jan","Feb","Mar","Apr","May","Jun","Jul","Aug","Sep","Oct","Nov","Dec"]}}; // en_US locale reference
Calendar._DN = ["Sunday","Monday","Tuesday","Wednesday","Thursday","Friday","Saturday"]; // full day names
Calendar._SDN = ["Sun","Mon","Tue","Wed","Thu","Fri","Sat"]; // short day names
Calendar._FD = 0; // First day of the week. "0" means display Sunday first, "1" means display Monday first, etc.
Calendar._MN = ["January","February","March","April","May","June","July","August","September","October","November","December"]; // full month names
Calendar._SMN = ["Jan","Feb","Mar","Apr","May","Jun","Jul","Aug","Sep","Oct","Nov","Dec"]; // short month names
Calendar._am = "AM"; // am/pm
Calendar._pm = "PM";

// tooltips
Calendar._TT = {};
Calendar._TT["INFO"] = "About the calendar";

Calendar._TT["ABOUT"] =
"DHTML Date/Time Selector\n" +
"(c) dynarch.com 2002-2005 / Author: Mihai Bazon\n" +
"For latest version visit: http://www.dynarch.com/projects/calendar/\n" +
"Distributed under GNU LGPL. See http://gnu.org/licenses/lgpl.html for details." +
"\n\n" +
"Date selection:\n" +
"- Use the \xab, \xbb buttons to select year\n" +
"- Use the " + String.fromCharCode(0x2039) + ", " + String.fromCharCode(0x203a) + " buttons to select month\n" +
"- Hold mouse button on any of the above buttons for faster selection.";
Calendar._TT["ABOUT_TIME"] = "\n\n" +
"Time selection:\n" +
"- Click on any of the time parts to increase it\n" +
"- or Shift-click to decrease it\n" +
"- or click and drag for faster selection.";

Calendar._TT["PREV_YEAR"] = "Prev. year (hold for menu)";
Calendar._TT["PREV_MONTH"] = "Prev. month (hold for menu)";
Calendar._TT["GO_TODAY"] = "Go Today";
Calendar._TT["NEXT_MONTH"] = "Next month (hold for menu)";
Calendar._TT["NEXT_YEAR"] = "Next year (hold for menu)";
Calendar._TT["SEL_DATE"] = "Select date";
Calendar._TT["DRAG_TO_MOVE"] = "Drag to move";
Calendar._TT["PART_TODAY"] = ' (' + "Today" + ')';

// the following is to inform that "%s" is to be the first day of week
Calendar._TT["DAY_FIRST"] = "Display %s first";

// This may be locale-dependent. It specifies the week-end days, as an array
// of comma-separated numbers. The numbers are from 0 to 6: 0 means Sunday, 1
// means Monday, etc.
Calendar._TT["WEEKEND"] = "0,6";

Calendar._TT["CLOSE"] = "Close";
Calendar._TT["TODAY"] = "Today";
Calendar._TT["TIME_PART"] = "(Shift-)Click or drag to change value";

// date formats
Calendar._TT["DEF_DATE_FORMAT"] = "%b %e, %Y";
Calendar._TT["TT_DATE_FORMAT"] = "%B %e, %Y";

Calendar._TT["WK"] = "Week";
Calendar._TT["TIME"] = "Time:";
//]]>
</script>
            <p class="required">* Required Fields</p>
    </div>
<script type="text/javascript">decorateGeneric($$('#product-options-wrapper dl'), ['last']);</script>
<div class="product-options-bottom">
    

        
    <div class="price-box">
                                                            <span class="regular-price" id="product-price-57_clone">
                    <span class="price">$75.00</span>                </span>
                        
        </div>



    <div class="add-to-cart">
                <label for="qty">Qty:</label>
        <input type="text" name="qty" id="qty" maxlength="12" value="1" title="Qty" class="input-text qty">
                <button type="button" title="Add to Cart" class="button btn-cart" onclick="productAddToCartForm.submit()"><span><span>Add to Cart</span></span></button>
        <p class="paypal-logo"><a id="ec_shortcut_c2e3fb1be4b9e9d53800cbc4d5f1e274" href="http://myhairpalace.com/index.php/default/paypal/express/start/">
    <img src="https://fpdbs.paypal.com/dynamicimageweb?cmd=_dynamic-image&amp;buttontype=ecshortcut&amp;locale=en_US" alt="Checkout with PayPal">
</a>
    <input type="hidden" id="pp_checkout_url" name="return_url" value="">
<script type="text/javascript">
//<![CDATA[
    Event.observe('ec_shortcut_c2e3fb1be4b9e9d53800cbc4d5f1e274', 'click', function(event) {
                            $('pp_checkout_url').value = this.href;
            productAddToCartForm.submit();
            event.stop();
            });
//]]>
</script></p>    </div>
</div>
            </form>
    <script type="text/javascript">
    //<![CDATA[
            var productAddToCartForm = new VarienForm('product_addtocart_form');
            productAddToCartForm.submit = function(){
                    if (this.validator.validate()) {
                            this.form.submit();
                    }
            }.bind(productAddToCartForm);
    //]]>
    </script>
    </div>

    <div class="product-collateral">
        <div class="box-collateral box-description">
                            <h2>Details</h2>
    <div class="std">
        Nautral Hairline 100% Human Hair Lace Front wig.     </div>
        </div>
                    <div class="box-collateral box-tags">
    <h2>Product Tags</h2>
            <form id="addTagForm" action="http://myhairpalace.com/index.php/default/tag/index/save/product/57/uenc/aHR0cDovL215aGFpcnBhbGFjZS5jb20vaW5kZXgucGhwL2RlZmF1bHQvaW5kaWFuLXJlbXktZnJvbnQvMTAwLWh1bWFuLWhhaXItbGFjZS1mcm9udC13aWctc3V6aWUuaHRtbD9fX19TSUQ9VQ,,/" method="get">
        <div class="form-add">
            <label for="productTagName">Add Your Tags:</label>
            <div class="input-box">
                <input type="text" class="input-text required-entry" name="productTagName" id="productTagName">
            </div>
            <button type="button" title="Add Tags" class="button" onclick="submitTagForm()">
                <span>
                    <span>Add Tags</span>
                </span>
            </button>
        </div>
    </form>
    <p class="note">Use spaces to separate tags. Use single quotes (') for phrases.</p>
    <script type="text/javascript">
    //<![CDATA[
        var addTagFormJs = new VarienForm('addTagForm');
        function submitTagForm(){
            if(addTagFormJs.validator.validate()) {
                addTagFormJs.form.submit();
            }
        }
    //]]>
    </script>
</div>
    </div>
</div>

function Resource(){
	this.url='';
	this.object=new Object();
	this.id='';
	this.categories=new Array();
}
function Users(){	
	Users.prototype=new Resource(); 
	this.url='user/';
	this.name='';
	this.email='';
};

function test(){
       var users = new Users();
       alert(users.id);
};