//Æ˾÷â ¿­±â
function popWin(url,name,width,height,scroll)
{
	leftPos=(screen.width-width)/2;
	topPos=(screen.height-height)/2;
	window.open(url,name,'width='+width+',height='+height+',top='+topPos+',left='+leftPos+', scrollbars='+scroll+', scrolling='+scroll);
}