//弹出窗口居中显示
function openwindow(url,name,iWidth,iHeight)
{
    var url;
    var name;
    var iWidth;
    var iHeight;
    var iTop = (window.screen.availHeight-30-iHeight)/2;
    var iLeft = (window.screen.availWidth-10-iWidth)/2;
    window.open(url,name,'height='+iHeight+',,innerHeight='+iHeight+',width='+iWidth+',innerWidth='+iWidth+',top='+iTop+',left='+iLeft+',toolbar=no,menubar=no,scrollbars=yes,resizeable=no,location=no,status=no');
}

//字体大小显示
function fontZoom(size)
{
   document.getElementById('con').style.fontSize=size+'px';
}