var ImgType = {
    errorImg : "/images/default.jpg"
};
var Img = {
    reload    :   function (objImg,ImgUrl){
        if (arguments.length<2){
            ImgUrl = ImgType.errorImg;
        }
        if (typeof(objImg)=="object")
            try{
                objImg.src = ImgUrl;
            }catch(e){}
    },
    resize :  function (objImg,imgType){
        _reSizeImage(img,imgType.width,imgType.height);
    },
    _reSizeImage  :   function (ImgD,iwidth,iheight){
        var image=new Image();
        image.src=ImgD.src;
    
        if(image.width>0 && image.height>0){
            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;
           }
        }
    }
}