// functions to handle ajax responses //
function removeOptions(elemName){
var el = document.getElementById(elemName);
while(el.hasChildNodes()){
   el.removeChild(el.firstChild);
}
}

function showDealers(){
if(request.readyState == 4){
        if(request.status == 200){
            //alert(request.responseText);
			document.getElementById('dealerlist').style.display="inline";
			document.getElementById('mapselector').style.display="none";
			var ajaxDisplay = document.getElementById('dealerlist');
			ajaxDisplay.innerHTML = request.responseText;
        } else {
            alert("A problem occurred with communicating between the XMLHttpRequest object and the server program.");
        }
    }
}


function showMap()
{
	document.getElementById("dealerlist").style.display="none";
	document.getElementById("mapselector").style.display="inline";
}