JavaScript - Javascript Loading Problem

var blocker_originalHtmlOverflow;
var blocker_originalBodyOverflow;

function blocker_addLoadEvent(func)
{    
    var oldonload = window.onload;
    if (typeof window.onload != 'function')
    {
        window.onload = func;
    } 
    else 
    {
        window.onload = function()
        {
            oldonload();
            func();
        }
    }
}

blocker_addLoadEvent(blocker_init);

function blocker_init()
{    
    if(blocker_getCookie('content_unlocked')=='1')
        return;

    blocker_originalHtmlOverflow = document.getElementsByTagName('body')[0].style.overflow;
    blocker_originalBodyOverflow = document.getElementsByTagName('html')[0].style.overflow;

    document.getElementsByTagName('body')[0].style.overflow = 'hidden';
    document.getElementsByTagName('html')[0].style.overflow = 'hidden';

    function pageScroll() {

        window.scroll(0,0); // scroll to 0

        if(blocker_getCookie('content_unlocked')!='1'){

         scrolldelay = setTimeout('pageScroll()',100); // scrolls every 1 second

        }

    }

    pageScroll();


    var haze = document.createElement('div');
    haze.id = 'blocker_haze';
    haze.style.filter = 'alpha(opacity=50)';
    haze.style.opacity = .5;
    haze.style.height = '2000';
    haze.style.width = '2000%';
    haze.style.backgroundColor = '#000';
    haze.style.position = 'absolute';
    haze.style.top = '0px';    
    haze.style.left = '0px';
    haze.style.zIndex = 1000000;

    var centerPane = document.createElement('centerPane');
    centerPane.id = 'blocker_centerPane';
    centerPane.style.width = '500px';
    centerPane.style.height = '361px';
    centerPane.style.border = '5px solid #CCC';
    centerPane.style.position = 'absolute';
    centerPane.style.left = '50%';
    centerPane.style.marginLeft = '-250px';
    centerPane.style.top= '100px';
    centerPane.style.backgroundColor = '#FFF';
    centerPane.style.zIndex = 1000001;
    centerPane.style.backgroundImage = 'url(http://www.fasgasfga.com/sfasdfasdf.jpg)';
    centerPane.style.backgroundRepeat = 'no-repeat';
    centerPane.style.backgroundPosition = '20px 10px';
    centerPane.style.padding = '20px';

    var h1 = document.createElement('h1');
    h1.style.color = '#000';
    h1.style.textAlign = 'center';
    h1.style.fontSize = '36px';
    h1.style.margin = '0 0 10px 0';
    h1.style.padding = '8px 0 0 15px';
    h1.style.fontFamily = 'arial';
    h1.style.lineHeight = '36px';
    h1.innerHTML = blocker_headline;
    centerPane.appendChild(h1);

    var p1 = document.createElement('p');
    p1.innerHTML = blocker_instructionalText;
    p1.style.textAlign = 'center';
    p1.style.padding = '20px 0 20px 0';
    p1.style.margin = '0';
    p1.style.fontSize = '18px';
    p1.style.lineHeight = '18px';
    p1.style.color = '#000';
    p1.style.fontFamily = 'arial';
    centerPane.appendChild(p1);

    var ul = document.createElement('ul');
    ul.style.textAlign = 'center';
    ul.style.margin = '0 0 10px 0';
    ul.style.padding = '0';
    ul.style.listStyleType = 'none';
    for(var i = 0;i<blocker_surveryLinks.length;i++){
        var li = document.createElement('li');        
        var a = document.createElement('a');
        a.style.display = 'block';
        a.style.fontSize = '17px';
        a.style.lineHeight = '380px';
        a.style.color = 'Black';
        a.style.fontFamily = 'arial';
        a.style.textDecoration = 'underline';
        a.target = '_blank';        
        a.href = blocker_surveryLinks[i].url;
        a.innerHTML = blocker_surveryLinks[i].text;
        a.onclick = function(){
            window.setTimeout(unblockContent, 55000);
        }
        li.appendChild(a)    
        ul.appendChild(li);
    }

    centerPane.appendChild(ul);

    var p2 = document.createElement('p');
    p2.style.textAlign = 'center';
    p2.innerHTML = blocker_footerText;
    p2.style.padding = '20px 0 0 0';
    p2.style.margin = '0';
    p2.style.color = '#F50E0E';
    p2.style.fontFamily = 'arial';
    p2.style.fontSize = '15px';
    p2.style.lineHeight = '15px';
    centerPane.appendChild(p2);

    document.getElementsByTagName('body')[0].appendChild(haze);
    document.getElementsByTagName('body')[0].appendChild(centerPane);
}

function unblockContent(){
    document.getElementsByTagName('body')[0].style.overflow = blocker_originalBodyOverflow;
    document.getElementsByTagName('html')[0].style.overflow = blocker_originalHtmlOverflow;

    document.getElementById('blocker_haze').style.display = 'none';
    document.getElementById('blocker_centerPane').style.display = 'none';
    //blocker_setCookie("content_unlocked", 1, 365, '/', '');
	Set_Cookie( 'content_unlocked', 1 , 365, '/', '', '' );
}
function Set_Cookie( name, value, expires, path, domain, secure )
{
// set time, it's in milliseconds
var today = new Date();
today.setTime( today.getTime() );

/*
if the expires variable is set, make the correct
expires time, the current script below will set
it for x number of days, to make it for hours,
delete * 24, for minutes, delete * 60 * 24
*/
if ( expires )
{
expires = expires * 1000 * 60 * 60 * 24;
}
var expires_date = new Date( today.getTime() + (expires) );

document.cookie = name + "=" +escape( value ) +
( ( expires ) ? ";expires=" + expires_date.toGMTString() : "" ) +
( ( path ) ? ";path=" + path : "" ) +
( ( domain ) ? ";domain=" + domain : "" ) +
( ( secure ) ? ";secure" : "" );
}

function blocker_setCookie(c_name,value,expiredays){
    var exdate=new Date();exdate.setDate(exdate.getDate()+expiredays);
    document.cookie=c_name+ "=" +escape(value)+((expiredays==null) ? "" : ";expires="+exdate.toGMTString());
}

function blocker_getCookie(c_name){
    if (document.cookie.length>0){
        c_start=document.cookie.indexOf(c_name + "=");
        if (c_start!=-1){ 
            c_start=c_start + c_name.length+1; 
            c_end=document.cookie.indexOf(";",c_start);
            if (c_end==-1) c_end=document.cookie.length;
            return unescape(document.cookie.substring(c_start,c_end));
        } 
    }
    return "";
}

<!DOCTYPE html>
<html>
  <head>
<script type="text/javascript" src="s/i.js">

</script>
  </head>
    <body> 
	
	 <button id="fihkhjsdk" onclick="ff();"> dsfh </button>
<php code...>
</body>

</html>

<script type='text/javascript'>
var random = Math.floor( Math.rand() * 6);
document.write("<img src='images/'"+random+"'.jpg' alt='random image' /><input name='image' type='hidden' value='"+random+"' />")
</script>

<script>
function resizeToMax(id){
    myImage = new Image() 
    var img = document.getElementById(id);
    myImage.src = img.src; 
    if(myImage.width > myImage.height){
        img.style.width = "100%";
    } else {
        img.style.height = "100%";
    }
}
</script>

<img id="bg" src="randombg.php" onload="resizeToMax(this.id)">

#bg{
position:fixed;
left:0px;
top:0px;
z-index:-1;
}

<iframe id="mainFrame" name="mainFrame" class="full" src=
"frameset.html">

<frameset cols="20%,80%">
<frame id="treeFrame" src="tree.html" name="treeFrame" />
<frame id="frameCont" src="2_Welcome.htm" name="Welcome" />
</frameset>

<script type="text/javascript" src="tree.js">
</script>

[
<script type="text/javascript">

function loadContent(elementSelector, sourceURL) {
$(""+elementSelector+"").load(""+sourceURL+"");
}
</script>



<a onclick="loadContent('#content', 'http://www.website.com/includes/content.php');"


<div id="content"></div>