JavaScript - (need Help To Fine Tune) Popup For First Time Visitor Only - Circumvent Blockers

I have merged two scripts to make a popup that comes up even if blocked, and is for first time visitor only (cookie). The problem is that the way I'm doing it, it might show one or more times to the visitor. I don't want that because it will be irritating and this is a high-priority client.

I'm posting the whole script because I think the problem is calling the popup before checking the cookie, but not sure how to rearrange things.

Also, I did search and found some good dhtml stuff but don't want to rewrite. This was supposed to be done last night so if I can fine tune this for now, I'll have time to rewrite something better (or at least play around with another script).

Also, the popup refuses to come up in IE - I have IE6, but I detest IE and their site doesn't even load in it so whatever. I tested in FFox3, Opera 10 and Safari and it seems to work but like I say because of the onclick - it will load at any click until the user goes to a different page. I added a refresh in there but it just made things worse - too much going on for the user at that point.

Thanks for any suggestions. I hope I've used the right tags for this. I've highlighted the stuff at the bottom that I think is where I need the most help.

Here is the code:

// added for popup -kk

var expDays = 100; // number of days the cookie should last

//var page = "only-popup-once.html";
//var windowprops = "width=300,height=200,location=no,toolbar=no,menubar=no,scrollbars=no,resizable=yes";

var newwin = null;

function openwin() {
// window.location.reload();
var url = "/NEWSLETTER.html"

try {
if (newwin != null && typeof(newwin.location.href) != 'undefined') {
newwin.location.href = url;
} else {
newwin = open(url, "Subscribe", "height=390,width=545,screenX=0,left=0,screenY=0,top=0,channelmode=0,dependent=0,directories=0,fulls creen=0,location=0,menubar=0,resizable=yes,scrollbars=0,status=0,toolbar=0");
}

newwin.focus();
} catch (e) {
newwin = open(url, "Subscribe", "height=390,width=520,screenX=0,left=0,screenY=0,top=0,channelmode=0,dependent=0,directories=0,fulls creen=0,location=0,menubar=0,resizable=yes,scrollbars=0,status=0,toolbar=0");
newwin.focus()
}
}

function GetCookie (name) {
var arg = name + "=";
var alen = arg.length;
var clen = document.cookie.length;
var i = 0;
while (i < clen) {
var j = i + alen;
if (document.cookie.substring(i, j) == arg)
return getCookieVal (j);
i = document.cookie.indexOf(" ", i) + 1;
if (i == 0) break;
}
return null;
}

function SetCookie (name, value) {
var argv = SetCookie.arguments;
var argc = SetCookie.arguments.length;
var expires = (argc > 2) ? argv[2] : null;
var path = (argc > 3) ? argv[3] : null;
var domain = (argc > 4) ? argv[4] : null;
var secure = (argc > 5) ? argv[5] : false;
document.cookie = name + "=" + escape (value) +
((expires == null) ? "" : ("; expires=" + expires.toGMTString())) +
((path == null) ? "" : ("; path=" + path)) +
((domain == null) ? "" : ("; domain=" + domain)) +
((secure == true) ? "; secure" : "");
}

function DeleteCookie (name) {
var exp = new Date();
exp.setTime (exp.getTime() - 1);
var cval = GetCookie (name);
document.cookie = name + "=" + cval + "; expires=" + exp.toGMTString();
}

var exp = new Date();
exp.setTime(exp.getTime() + (expDays*24*60*60*1000));

function amt(){
var count = GetCookie('count')
if(count == null) {
SetCookie('count','1')
return 1
} else {
var newcount = parseInt(count) + 1;
DeleteCookie('count')
SetCookie('count',newcount,exp)
return count
}
}

function getCookieVal(offset) {
var endstr = document.cookie.indexOf (";", offset);
if (endstr == -1)
endstr = document.cookie.length;
return unescape(document.cookie.substring(offset, endstr));
}

function checkCount() {
var count = GetCookie('count');
if (count == null) {
count=1;
SetCookie('count', count, exp);
// window.open(page, "", windowprops);
window.onclick = openwin;
// window.location.reload();
} else {
count++;
SetCookie('count', count, exp);
}
}

window.onload=checkCount;

// end popup -kk