function ShowSelected() {
	var selectedstring;
	selectedstring = document.forms[0].elements["SelectedListings"].value;
	if(selectedstring != "") location.href = "listing_detail.aspx?id=" + selectedstring;
}

function DoSelect(){
	var counter;
	var selectedstring = "";
	
	for(counter=0;counter < document.forms[0].elements.length; counter++){
		if(document.forms[0].elements[counter].type == "checkbox")
			if(document.forms[0].elements[counter].checked)
				selectedstring += document.forms[0].elements[counter].name + ",";
	}
	document.forms[0].elements["SelectedListings"].value = selectedstring;
}