//检查每个问题是否有选中一项
function SingleCheck(ID)
{
	if(ID!="")
	{
		var QID = ID.split(",");
		for(var i=0;i<QID.length;i++)
		{	
			HCd = 0;
			ckItems = document.getElementsByName("Q_" + QID[i]);
			for(j=0;j<ckItems.length;j++){
				if(ckItems[j].checked)HCd = 1;		//判断是否有选中
			}
			if(HCd == 0)
			{
				ckItems[0].focus();
				alert("每个问题您至少要选中一项!");
				return false;
			}
		}
		return true;
	}
}
function checkVoteForm(oForm)
{
	if(!SingleCheck(oForm.AllQn.value))return false;
	return true;
}
function showVoteForm(oForm,sUrl)
{
	oForm.action = sUrl;
	oForm.submit();
}