function Sear_Key(FormName)
{
    var key=document.getElementById("key").value.replace(/(^\s+|\s+$)/g,"");//大类
    if(key=="")
    {
        alert("请输入关键字");
        return;
    }
    FormName.submit();
}
function Img_Size(obj,w,h)
{
    var srcImage = new Image();
    srcImage.src=obj.src;
    var srcW=srcImage.width;
    var srcH=srcImage.height;
    var newW,newH;
    if(srcW>srcH)
    {
        if(srcW>w)
        {
            obj.width=newW=w;
            obj.height=newH=(w/srcW)*srcH;
        }
        else
        {
            obj.width=newW=srcW;
            obj.height=newH=srcH;
        }
    }
    else
    {
        if(srcH>h)
        {
            obj.height=newH=h;
            obj.width=newW=(h/srcH)*srcW;
        }
        else
        {
            obj.width=newW=srcW;
            obj.height=newH=srcH;
        }
    }
    if(newW>w)
    {
        obj.width=w;
        obj.height=newH*(w/newW);
    }
    else if(newH>h)
    {
        obj.height=h;
        obj.width=newW*(h/newH);
    }
}