function popWin(url,width,height) {
	if (width==undefined) {
		width=635;
	}
	if (height==undefined) {
		height=450;
	}
	eval ("popupWin = window.open('', 'mainwindow', 'scrollbars=no,resizable=yes,toolbar=no,width=" + width + ",height=" + height + ",left=10,top=10,screenX=10,screenY=10')");
	popupWin.location=url ;                
}