var RandomHidden;

function changeImg(){
	isRightCode(); 
    var imgSrc = $('#RandomImage');   
    var src = imgSrc.attr("src");   
    imgSrc.attr('src',chgUrl(src));   
}   
 
function chgUrl(url){   
    var timestamp = (new Date()).valueOf();   
    //url = url.substring(0,17);   
    if((url.indexOf('&')!=-1)){   
        url = url + '&timestamp=' + timestamp;   
    }else{   
        url = url + '?timestamp=' + timestamp;   
    }   
    return url;   
}   

function isRightCode(){
    $.ajax({   
        type:'POST',
        url:'../../RandomImage_RandomResult',
        success:callback
    });
}


function callback(data){
    //document.getElementById("RandomHidden").value=data;
    RandomHidden=data;
}


function boolCode()
{
	var RandomText=$('#RandomText').attr('value');
	//var RandomHidden=$('#RandomHidden').attr('value');
	//alert(RandomText);
	//alert(RandomHidden);
	//alert(RandomHidden.substring(0,6));
	//toUpperCase转大写
	//toLowerCase转小写
	//if(RandomText!=undefined && RandomHidden!=undefined &&  RandomText.toUpperCase()==RandomHidden.substring(0,6))
	if(RandomText!='' && RandomHidden!='' && RandomText!=undefined && RandomHidden!=undefined && RandomText.toUpperCase()==RandomHidden.substring(0,6))
	{
		return true;
	}
	else
	{
		alert('验证码输入不正确！');
		return false;
	}
}

window.onload=function()
{

}