function captchaSetImg(urlModule){
   var timeStamp = "casotisk=" + new Date().getTime();
   var urlPost = urlModule + '?' + timeStamp;
   $('#captcha_img').attr('src',urlPost);
}
function captchaSetImgEl(urlModule,elItem){
   var timeStamp = "casotisk=" + new Date().getTime();
   var urlPost = urlModule + '?' + timeStamp;
   $('#'+elItem).attr('src',urlPost);
}