function preventAjax(obj,num){             obj.disabled = true;             var num = num;             var types =obj.type;             if(types == 'submit'){                 var text = obj.value;                 var time1 = setInterval(function(){                     obj.value = num;                     num--;                     if(obj.value <= 0 ){                         clearInterval(time1);                         obj.disabled = false;                         obj.value = text;                     }                 },1000);             }else{                 var text = obj.innerHTML                 var time1 = setInterval(function(){                     obj.innerHTML = num;                     num--;                     if(obj.innerHTML <= 0 ){                         clearInterval(time1);                         obj.disabled = false;                         obj.innerHTML = text;                     }                 },1000);             }         }