Resolved - Check ListBox for selection

[Memnoch1207]

I have rows in a table that are populated from a database.
The first field is a textbox called txtRank, this is where the user enters the rank for this particular item.
If the rank is greater than 0, then a listbox appears (named cboEnhancement_<GUIDFROMDATABASE>) and the user must select at least one item from the listbox.

What I need to do in javascript is loop through all of the txtRank elements, if they have a value greater than 0, then I need to check the cboEnhancement listbox for this row to make sure they have selected at least one option.

Here's what I have so far, it works but I just don't know how to check the associated listboxes selections.

function CheckRankAndVersions()
{
   // If the rank is greater than 0, then make sure they 
   // have selected a version for the enhancement
   for (i=0; i<document.forms[0].elements.length; i++)
   {
      if(document.forms[0].elements[i].name == "txtPriority")
      {
         if(document.forms[0].elements[i].value > 0)
         {
            //This gets the value of the txtRank textbox
            alert("Greater than 0: " + document.forms[0].elements[i].value);

            //Need to check the listboxes selections here
         }
      }
   }
}

I'm just a little confused how to associate a particular row txtRank with the same rows cboEnhancement listbox.

Any ideas how this can be done?

BTW, rewriting this isn't an option, this is just a small part of a large application.