var exit=true;

function exitwindow()
{
var url = 'survey.htm';
var win = 'toolbar=0,directories=0,menubar=0,scrollbars=1,resizable=1,width=420,height=500';
//  alert ("From exit window, cookie surveydisplayed = " + get_cookie('surveydisplayed'));
if (get_cookie('surveydisplayed')!='yes'){
   if (exit){
//     open(url,'WindowName',win);
//     document.cookie="surveydisplayed=yes";
     }
}
}

function get_cookie(Name) {
var search = Name + "="
var returnvalue = "";
if (document.cookie.length > 0) {
offset = document.cookie.indexOf(search)
if (offset != -1) { // if cookie exists
offset += search.length
// set index of beginning of value
end = document.cookie.indexOf(";", offset);
// set index of end of cookie value
if (end == -1)
end = document.cookie.length;
returnvalue=unescape(document.cookie.substring(offset, end))
}
}
return returnvalue;
}