function setCountyDropDownListener(){
	var countiesListElt = document.getElementById("countiesList");
	
	attachEventListener(countiesListElt, "change", changeCountiesList, false);
}

function changeCountiesList(event){
	var countiesListElt = document.getElementById("countiesList");
	var sessionId = document.getElementById("sessionIdHidden").value;
	var webPath = document.getElementById("webPathHidden").value;
	
	var newUrl = webPath + countiesListElt.options[countiesListElt.selectedIndex].value + "?sid=" + sessionId;
	window.location = newUrl;
}

addLoadListener(setCountyDropDownListener);