// JScript File

    function checkDropDowns(current, dd1Name, dd2Name, dd3Name)
    {
        var dd1 = document.getElementById(dd1Name);
        var dd2 = document.getElementById(dd2Name);
        var dd3 = document.getElementById(dd3Name);
        
        var currentHasValue;
        var notAlone = false;
        
        
        if(dd1.selectedIndex > 0)
        {
            notAlone = true;
            currentHasValue = dd1;
        }
        else if(dd2.selectedIndex > 0)
        {
            notAlone = true;
            currentHasValue = dd2;
        }
        else if(dd3.selectedIndex > 0)
        {
            notAlone = true;
            currentHasValue = dd3;
        }
        
        
        if(notAlone)
        {
            if(confirm("You already have a source selected in another category.\n\nWould you like to replace the previously selected source with this one?"))
            {
                currentHasValue.selectedIndex = 0;
            }
            else
            {
                current.selectedIndex = 0;
            }
            
        }       
    }