var rndno;
var formName="",actionFormUrl="";

function getRandomNum(lbound, ubound) { 

	return (Math.floor(Math.random() * (ubound - lbound)) + lbound); 
} 

function getRandCode(){
	var Randomstr="qwertyuiopasdfghjklmnbvcxz1234567890" 
	var s=Randomstr.split(""); 
	var t=""; 
	for (var i=0;i<7;i++){ 
	t+=s[getRandomNum(1,36)]; 
	} 
	return t.toUpperCase();
}

function keypress(){
	if (event.keyCode==13) doAction();
	if ($("rnd"))
	{
		$("rnd").innerHTML=getRandCode();
	}
}

function on_focus(){
	if ($("wrnd"))
	{
		$("wrnd").innerHTML="<span style='color:red;'>安全码</span>"
	}
	if ($("msgrnd"))
	{
		$("msgrnd").innerHTML="<span style='font-weight: bold;color:red;'>点击安全码</span>"
	}
	
	$("rnd").innerHTML=getRandCode();
}
function on_blur(){
	if ($("wrnd"))
	{
		$("wrnd").innerHTML="安全码"
	}
	if ($("msgrnd"))
	{
		$("msgrnd").innerHTML="点击安全码"
	}

	$("rnd").innerHTML=getRandCode();
	
}

function doCopyRnd(){
	$("rcode").value=rndno;
	return false;
}

function refreshRnd(v){	
	rndno=v;
	if(!$(formName)||actionFormUrl=="")
	{
		alert("参数无效!");
		return false;
	}
	UrlPost(actionFormUrl+v,"hidden_frame");
}