function search_go()
{
	// build query string from user input
	var qs = "";
	if (document.all.category.value != "")
	{
		qs += (qs == "" ? "" : "&") + "category=" + escape(document.all.category.value);
	}
	if (document.all.business.value != "")
	{
		qs += (qs == "" ? "" : "&") + "business=" + escape(document.all.business.value);
	}
	if (document.all.city.value != "")
	{
		qs += (qs == "" ? "" : "&") + "city=" + escape(document.all.city.value);
	}
	if (document.all.county.value != "")
	{
		qs += (qs == "" ? "" : "&") + "county=" + escape(document.all.county.value);
	}
	if (document.all.zip.value != "")
	{
		qs += (qs == "" ? "" : "&") + "zip=" + escape(document.all.zip.value);
	}
	if (qs == "")
	{
		// alert user if no search is defined
		alert("You must provide at least one search condition.");
	}
	else
	{
		// navigate to results page
		//window.navigate("results.aspx?" + qs);
		window.location = "results.aspx?" + qs;
	}
}
function search_all()
{
	//window.navigate("results.aspx?all=");
	window.location ="results.aspx?all=";
}