function DrawImage(ImgD,iwidth,iheight){
    var image=new Image();
    var flag=false;
    image.src=ImgD.src;

    if(image.width>0 && image.height>0){
        flag=true;
        if(image.width/image.height>= iwidth/iheight){
            if(image.width>iwidth){
                ImgD.width=iwidth;
                ImgD.height=(image.height*iwidth)/image.width;
            }else{
                ImgD.width=image.width;
                ImgD.height=image.height;
            }
            ImgD.alt=image.width+"×"+image.height;
        }else{
            if(image.height>iheight){
                ImgD.height=iheight;
                ImgD.width=(image.width*iheight)/image.height;
            }else{
                ImgD.width=image.width;
                ImgD.height=image.height;
            }
            ImgD.alt=image.width+"×"+image.height;
        }
    }
}

function ajax_to_pager(url, page, id) {
    if (typeof(jQuery)=="undefined") {
        return ;
    }
    var $id = $("#"+id);
    if ($id.is("div")) {
        $id.html("加载中");
        $.get(url, {"page":page}, function(r){
            $id.html(r);
        });
    }
}
function waiting_click(form){
    $(form).find("input[type=submit]").attr("disabled","disabled").val("表单已提交，请稍候");
}