function refresh_code() {
	$("#verifyImg").attr('src', url+"/Base/verify/"+Math.random());
}
var flag=false;
function limitImage(ImgD){
    var areaWidth = 490;
    var areaHeight = 400;
    var image=new Image();
    image.src=ImgD.src;
    if(image.width>0 && image.height>0){
        flag=true;
        if(image.width/image.height>= areaWidth/areaHeight){
            if(image.width>areaWidth){
                ImgD.width=areaWidth;
                ImgD.height=(image.height*areaWidth)/image.width;
            }else{
                ImgD.width=image.width;
                ImgD.height=image.height;
            }
            ImgD.alt=image.width+"กม"+image.height;
        }else{
            if(image.height>areaHeight){
                ImgD.height=areaHeight;
                ImgD.width=(image.width*areaHeight)/image.height;
            }else{
                ImgD.width=image.width;
                ImgD.height=image.height;
            }
            ImgD.alt=image.width+"กม"+image.height;
        }
    }
}