function openCopyRight(){
	var width=350;
	var height=460;
	var left=(screen.availWidth-width)/2;
  	var top=(screen.availHeight-height)/2;
	window.open('pop_copyright.html','copyright','toolbar=no,location=no,directories=no,status=no,menubar=no,scrollbars=no,resizable=no,width='+width+',height='+height+',left='+left+', top='+top+',screenX='+left+',screenY='+top+'');
}