function openNewWin(URL,popWidth,popHeight) {
	if ((navigator.userAgent).indexOf("Opera")!=-1) { // opera
		var leftPos = (window.innerWidth - popWidth) / 2;
		var topPos = (window.innerHeight - popHeight) / 2;
	} else { //netscape and IE
		var leftPos = (screen.width - popWidth) / 2;
		var topPos = (screen.height - popHeight) / 2;
	}

	var winDimensions = "toolbar=0,status=0,scrollbars=1,resize=0,menubar=0,width="+popWidth+",height="+popHeight+",top="+topPos+",left="+leftPos;
	popup=window.open(URL,"newWin", winDimensions);
	if (window.focus){ popup.focus(); }
}