function centerWin(url, width, height){
	var centerX=(screen.width-width)/2;
	var centerY=((screen.height-height)/2)-55;
	window.open(url, 'centerWin', 'resizable=no,width='+width+',height='+height+',top='+centerY+',screenY='+centerY+',left='+centerX+',screenX='+centerX);
}