请帮忙看那里有问题了？数值传递的问题 高难
function   submit_b(){
  var   a=document.getElementsByName( "radiobutton ").length
for(var   i=0;i <a;i++)
{
    if(document.getElementsByName( "radiobutton ")[i].checked)  
    var   ab=document.getElementsByName( "radiobutton ")[i].value.split( "### ");
    b=ab[0];
    c=ab[1];
}
        top.frames[ 'rbottom1 '].location.href= '3mtrans.asp?creno= '+b;
        return   true;
}
</script>


------解决方案--------------------
function submit_b(){
var a=document.getElementsByName( "radiobutton ").length;
var b = ' ';
var c = ' ';
for(var i=0;i <a;i++)
{
if(document.getElementsByName( "radiobutton ")[i].checked) {
var ab=document.getElementsByName( "radiobutton ")[i].value.split( "### ");
b=ab[0];
c=ab[1];
}
}
top.frames[ 'rbottom1 '].location.href= '3mtrans.asp?creno= '+b;
return true;
}