var toggle = 0;
    var Select = false;

    function CountCheckbox() 
    {
        var counter = 0;
        var builder = '';
        for (var n=0; n < document.forms[0].length; n++) 
            if (document.forms[0].elements[n].type=='checkbox')
            {
                if (document.forms[0].elements[n].checked == true)
                    counter = counter + 1;
                    builder = builder + counter;
            }                       
            if (counter > 0 )
            {
                toggle = 1; Select = true;
            }    
    } 
    
    function Selection()
    {    
        if (toggle==0)            
            { Select = true; toggle = 1; }
		else
		    { Select = false; toggle = 0; }

        for (var n=0; n < document.forms[0].length; n++) 
            if (document.forms[0].elements[n].type=='checkbox')
            document.forms[0].elements[n].checked=Select; 
            return false; 		    		   		    
    }

    function SetSubDivBox(PassedVal)
    {   	 


        if (document.getElementById('DropDownList3').options[document.getElementById('DropDownList3').selectedIndex].value=="allSD")
        {
            document.getElementById('SubDevText').value = "";            
        }
        else
        {
            var DefTextValue = "is within ";
            
            
            if (PassedVal==1)       
                document.getElementById('SubDevText').value = DefTextValue + document.getElementById('DropDownList3').options[document.getElementById('DropDownList3').selectedIndex].value;
            else
                document.getElementById('SubDevText').value = DefTextValue + document.getElementById('DropDownList3').options[0].value;
        }    
                   
        
    }