function zoomin() 
{ 

	newZoom= parseInt(oZoom.style.zoom)+10+'%';
	oZoom.style.zoom =newZoom;

}
function zoomback() 
{ 

	oZoom.style.zoom = '100%';

}
function zoomout() 
{ 

	newZoom= parseInt(oZoom.style.zoom)-10;
	if(newZoom<20)
	{
		newZoom=20;
		alert("再小就看不见了！");
	}
	oZoom.style.zoom =newZoom +'%';
}
function read(url)
{
var maxW = 714;
var maxW2 = (screen.availWidth-800)/2;
var maxH = screen.availHeight-118;

 window.open(url,'_blank','top=0,left='+maxW2+',width='+maxW+',height='+maxH+', '
 +'menubar=yes,toolbar=YES,titlebar=YES,status=yes,scrollbars=yes,resizable=yes');
}
function dodownload(url,fname)
{
  var url1="down.php?url="+url+"&fname="+fname;
  window.location=url1;
}