function windowOpen(url,w,h) {
	var winleft = (screen.width - w) / 2;
	var winUp = (screen.height - h) / 2;
    var myWindow=window.open(url,'windowRef_Camen','scrollbars,left='+winleft+',top='+winUp+',width=' + w + ',height=' + h);
    if (!myWindow.opener) 
    	myWindow.opener = self;
}