var default_q_msg = "Type your destination";

function clearField (this_id){
	if (document.getElementById(this_id).value==default_q_msg){
		document.getElementById(this_id).value="";
	}
} 
function validateSearch() {
	if ((document.getElementById("query").value=="")||(document.getElementById("query").value==default_q_msg)){
		alert ("Please type in the location you want to park by.")
		document.getElementById("query").focus();
		return;
	}
	document.home_search.submit()
}