//显示下拉菜单
function menuFix() {
        var sfEls = document.getElementById("nav").getElementsByTagName("li");
        for (var i=0; i<sfEls.length; i++) {
        sfEls[i].onmouseover=function() {
        this.className+=(this.className.length>0? " ": "") + "sfhover";
        }
        sfEls[i].onMouseDown=function() {
        this.className+=(this.className.length>0? " ": "") + "sfhover";
        }
        sfEls[i].onMouseUp=function() {
        this.className+=(this.className.length>0? " ": "") + "sfhover";
        }
        sfEls[i].onmouseout=function() {
        this.className=this.className.replace(new RegExp("( ?|^)sfhover\\b"),
        "");
        }
        }
        }
 window.onload=menuFix;
 //简繁切换
 function Switch(obj)
 {
     
     var zhobj=document.getElementById(obj);
    // alert(zhobj.innerHTML);
     if(zhobj.innerHTML=='繁体版')
     {
         zh_tran('t');
         zhobj.innerHTML='简体版'
     }
     else
     {
         zh_tran('s');
         zhobj.innerHTML='繁体版'
     }
 }
 
 /*按比例生成缩略图*/
function DrawImage(MyPic,W,H){
  var flag=false;
  var image=new Image();
  image.src=MyPic.src;
  if(image.width>0 && image.height>0){
    flag=true;
    if(image.width/image.height>= W/H){
      if(image.width>W){  
        MyPic.width=W;
        MyPic.height=(image.height*W)/image.width;
      }
	  else{
        MyPic.width=image.width;  
        MyPic.height=image.height;
      }
    }
    else{
      if(image.height>H){  
        MyPic.height=H;
        MyPic.width=(image.width*H)/image.height;     
      }
	  else{
        MyPic.width=image.width;  
        MyPic.height=image.height;
      }
    }
  }
}