radio的javascript判断

<script language='JavaScript' type='text/JavaScript'>
function Check()
{
        if (selCheck('EVAL1','必须选择仪表和精神状态选项！') == 'no') return false;
        if (selCheck('EVAL2','必须选择讲稿选项') == 'no') return false;
        if (selCheck('EVAL3','必须选择表达能力选项！') == 'no') return false;
        if (selCheck('EVAL4','必须选择内容选项') == 'no') return false;
        return true;
}
function selCheck(dname,val)
{
        var FLAG = 0;
        rob = document.getElementsByName(dname);
        for(i=0;i<rob.length;i++)
        {
                if(rob[i].checked==true)
                        FLAG = 1;
        }
        if (FLAG == 0)
        {
                alert(val);
                return 'no';
        }
        else
                return 'yes';
}
</script>

来源：自己