function popUp(whichURL,w,h,addtlParams)
{
var optionString = "width="+w+",height="+h + addtlParams;
applicationVersion = navigator.appVersion;
numberVersion = applicationVersion.slice(22, 25);
var optionString = "width="+w+",height="+h + addtlParams;


ns4 = (document.layers)? true:false;
ie4 = (document.all)? true:false;
mac = (navigator.platform == "MacPPC")? true:false;

if ( ie4 && mac)  {
applicationVersion = navigator.appVersion;
numberVersion = applicationVersion.slice(22, 25);

if (numberVersion < '5.0')  { 
var optionString = "width="+(w-15)+",height="+h + addtlParams;
} else {
var optionString = "width="+(w-15)+",height="+h + addtlParams;
}
}


// Mac users need a menubar
if (navigator.appVersion.indexOf("Mac") > 0) {optionString+=",menubar"}
window.open(whichURL,"_blank",optionString)

// copyright 2001, Sudden Industries
}