//打开新窗口
function openwin(url)
 {
   window.open(url,"_blank","height=500,width=590,resizable=no,scrollbars=yes,statue=no,toolbar=no,menubar=no,location=no,left=150,top=80");
 }

//字体放大
function doZoom(size){
	document.getElementById('zoom').style.fontSize=size+'px'
}