Asp+js Screen Resolution Function Not Working In Netscape

the below function allows me to pass the screen resoltion variable to asp through a cookie. It works in IE and Opera but not in Netscape. What is the problem?

Code:
<script language="JavaScript">
<!--
function checkres(){
if('<%=Request.Cookies("screenres")%>' != window.screen.width + 'x' + window.screen.height){
document.cookie = 'screenres=' + window.screen.width + 'x' + window.screen.height
window.location.href("default.asp")
}
}
// -->
</script>
if someone doesn't know what the asp line does, then 800x600 may be an output. Like below

Code:
<script language="JavaScript">
<!--
function checkres(){
if(&#39800;x600' != window.screen.width + 'x' + window.screen.height){
document.cookie = 'screenres=' + window.screen.width + 'x' + window.screen.height
window.location.href("default.asp")
}
}
// -->
</script>
the if statement doesn't appear to be executed in NS...so I presume that the error is in the line

Code:
if('<%=Request.Cookies("screenres")%>' != window.screen.width + 'x' + window.screen.height){