var theWin; 

bName = navigator.appName;
bVer = parseInt(navigator.appVersion);

function closeWin() {
	if(theWin && !theWin.closed) {
		theWin.close();
	}	
}
function popWin(url) {
	if (bName == "Microsoft Internet Explorer" && bVer >= 4 || bName == "Netscape" && bVer > 3) {
		itsNav3(url);
	} else if (bName == "Netscape" && bVer <= 3) {
		itsNav3(url);
	} else {
		eyeE3(url);
	}
	
}

function itsNav3(url) {
	if(theWin == null || theWin.closed) {
		theWin = window.open(url, "", "toolbar=no,location=no,directories=no,status=no,menubar=no,scrollbars=yes,resizable=no,width=630,height=510,top=100,left=100");           
	} else {
		theWin.close();
		theWin = window.open(url, "", "toolbar=no,location=no,directories=no,status=no,menubar=no,scrollbars=yes,resizable=no,width=630,height=510,top=100,left=100");     
	}
}

function eyeE3(url) {
	theWin = window.open(url, "popup", "toolbar=no,location=no,directories=no,status=no,menubar=no,scrollbars=yes,resizable=no,width=630,height=510,top=100,left=100");          
}