//Clear fields
function clearText(field){

    if (field.defaultValue == field.value) field.value = '';
    else if (field.value == '') field.value = field.defaultValue;

}

// show/hide subnavs
	var timeout = 500;
	var closetimer = 0;
	var navitem = 0;

	function nav_open(){
		nav_canceltimer();
		nav_close();
		show_sub();
		navitem = $(this).find('ul').css('visibility', 'visible');
	}

	function nav_close(){
		if(navitem) navitem.css('visibility', 'hidden');
	}

	function nav_timer(){
		closetimer = window.setTimeout(hide_sub, timeout);
	}

	function nav_canceltimer(){
		if(closetimer){
			window.clearTimeout(closetimer);
		        closetimer = null;
	}}
	
	function hide_sub(){
	$("#subnav0,#subnav1,#subnav2,#subnav3,#subnav4").fadeOut(300);
	}
	
	function show_sub(){
	$("#subnav0,#subnav1,#subnav2,#subnav3,#subnav4").fadeIn(1000);
	
	}


	$(document).ready(function(){
		$('#nav > li').bind('mouseover', nav_open)
		$('#nav > li').bind('mouseout',  nav_timer)
	});