function CheckBall(obj, max)
{
	var pool = document.getElementsByName(obj.name)
	var checkednum=0;
	for(var i=0; i<pool.length; i++) 
	{
		if(pool[i].checked)
			checkednum++;
	}
	if(checkednum>max)
	{
		alert("所选号码不得超过"+max+"个！");
		return false;
	}
	for(var i=0; i<pool.length; i++) 
	{
		pool[i].style.background="#FFFFFF";
		if(pool[i].checked)
		{
			if (obj.name == "redball")
				pool[i].style.background="#FF0000";
			else
				pool[i].style.background="#0000FF";
		}	
	}
}

function ResetBall()
{
	for(var i=0; i<document.form1.redball.length; i++) 
	{
		document.form1.redball[i].checked = false;
		document.form1.redball[i].style.background="#FFFFFF";
	}
	for(var i=0; i<document.form1.blueball.length; i++) 
	{
		document.form1.blueball[i].checked = false;
		document.form1.blueball[i].style.background="#FFFFFF";
	}
}

function OnSubmit(maxr,maxb)
{
	var checkednum=0;
	var selnums="";
	for(var i=0; i<document.form1.redball.length; i++) 
	{
		if(document.form1.redball[i].checked)
		{
			checkednum++;
			selnums = (i+1) + "+" + selnums ;
		}
	}
	if(checkednum>maxr || checkednum<maxb)
	{
		alert("所选号码数目不正确！");
		return false;
	}
}