function do_search() {
	$("#results").html('');
	show_progress(window.document.getElementById("directory_form"), window.document.getElementById("progress"));
	$.get("/php/search.php",
		   {last_name:$("#last_name").val(),
		    first_name:$("#first_name").val(),
			department:$("#department").val(),
			xsl:"directory_to_list.xsl"},
			function(resp){
				process_search(resp);			
			});
}

function process_search(resp) {
	hide_progress(window.document.getElementById("directory_form"), window.document.getElementById("progress"));
	$("#results").html(resp);
}

function show_progress(trans_div, progress_indicator) {
	$(trans_div).addClass("transparent");
	$(progress_indicator).removeClass("hidden");	
}

function hide_progress(trans_div, progress_indicator) {
	$(trans_div).removeClass("transparent");
	$(progress_indicator).addClass("hidden");	
}