popupWins = new Array();

function windowOpener(url, name, w, h) {
	var winl = (screen.width - w) / 2;
	var wint = (screen.height - h) / 2;
	args = 'height='+h+',width='+w+',top='+wint+',left='+winl+',scrollbars=no,noresize';
	if ( typeof( popupWins[name] ) != "object" ){
		popupWins[name] = window.open(url,name,args);
	} else {
		if (!popupWins[name].closed){
			popupWins[name].location.href = url;
		} else {
			popupWins[name] = window.open(url, name,args);
		}
	}
	
	popupWins[name].focus();
}