function displayCategories(town)
{
	url 	= "../libs/listing_categories.class.php";
	
	colour_code = $F('colour_code');

	data 	= "action=getCategories&town=" + town + "&colour_code=" + colour_code;

	document.getElementById("loading2").innerHTML = "loading ...";

	var aj = new Ajax.Request(
	   url, {
		method:"get",
		parameters: data,
		onComplete: returnCategories
		}
	  );
}

function returnCategories(oReq)
{
	document.getElementById("loading2").innerHTML = "";
	document.getElementById("categories").innerHTML = oReq.responseText;
}

function colourcode(val)
{
	if (val != '0')
	{
		$('categories').innerHTML = '';
		
	}
}