function mainSearchSubmit() {
	var el = $("mainSearch");
	var v = el.value.replace(/^\s+|\s+$/g,"");
	if(v == "" || v == 'search term' ) {
		el.value = " ";
		alert('Please enter some search terms');
		el.focus();
		return false;
	}
	return true;
}

function focusSearch(focus) {
	var el = $("mainSearch");
	if(focus && el.value=="search term") el.value = "";
	if(!focus && el.value == "" ) el.value = "search term";
}