function expand(thistag, tag) {
   styleObj=document.getElementById(thistag).style;
   if (styleObj.display=='none')
   {
   	styleObj.display='';
   }
   else {
   	styleObj.display='none';
   }
}

<!-- Begin
function popUp(URL,CPSize) {
day = new Date();
id = day.getTime();
eval("page" + id + " = window.open(URL, '" + id + "', '" + CPSize + ",toolbar=0,scrollbars=1,location=0,statusbar=0,menubar=0,resizable=1,height=340');");
}
// End -->