$(document).ready(function() {

  //TOP NAV DROP DOWN
	$(".nv1").hoverIntent({
	sensitivity: 1, // number = sensitivity threshold (must be 1 or higher)
	interval: 50,   // number = milliseconds for onMouseOver polling interval
	over: function() {
	var menu = $(this);
	$(".nv1").css({background:"url(http://painfoundation.org/assets/images/newsite/images/nav1-on.jpg) no-repeat"});
	menu.children("ul.top_menu1").slideDown();
	},     // function = onMouseOver callback (required)
	timeout: 500,   // number = milliseconds delay before onMouseOut
	out: function () {
	var menu = $(this);
	$(".nv1").css({background:"url(http://painfoundation.org/assets/images/newsite/images/nav1-off.jpg) no-repeat"});
	menu.children("ul.top_menu1").slideUp();
	}       // function = onMouseOut callback (required)
	});
	
   $(".nv2").hoverIntent({
	sensitivity: 1, // number = sensitivity threshold (must be 1 or higher)
	interval: 50,   // number = milliseconds for onMouseOver polling interval
	over: function() {
	var menu = $(this);
	$(".nv2").css({background:"url(http://painfoundation.org/assets/images/newsite/images/nav2-on.jpg) no-repeat"});
	menu.children("ul.top_menu2").slideDown();
	},     // function = onMouseOver callback (required)
	timeout: 500,   // number = milliseconds delay before onMouseOut
	out: function () {
	var menu = $(this);
	$(".nv2").css({background:"url(http://painfoundation.org/assets/images/newsite/images/nav2-off.jpg) no-repeat"});
	menu.children("ul.top_menu2").slideUp();
	}       // function = onMouseOut callback (required)
	});
			$(".nv3").hoverIntent({
	sensitivity: 1, // number = sensitivity threshold (must be 1 or higher)
	interval: 50,   // number = milliseconds for onMouseOver polling interval
	over: function() {
	var menu = $(this);
	$(".nv3").css({background:"url(http://painfoundation.org/assets/images/newsite/images/nav3-on.jpg) no-repeat"});
	menu.children("ul.top_menu3").slideDown();
	},     // function = onMouseOver callback (required)
	timeout: 500,   // number = milliseconds delay before onMouseOut
	out: function () {
	var menu = $(this);
	$(".nv3").css({background:"url(http://painfoundation.org/assets/images/newsite/images/nav3-off.jpg) no-repeat"});
	menu.children("ul.top_menu3").slideUp();
	}       // function = onMouseOut callback (required)
	});
	$(".nv4").hoverIntent({
	sensitivity: 1, // number = sensitivity threshold (must be 1 or higher)
	interval: 50,   // number = milliseconds for onMouseOver polling interval
	over: function() {
	var menu = $(this);
	$(".nv4").css({background:"url(http://painfoundation.org/assets/images/newsite/images/nav4-on.jpg) no-repeat"});
	menu.children("ul.top_menu4").slideDown();
	},     // function = onMouseOver callback (required)
	timeout: 500,   // number = milliseconds delay before onMouseOut
	out: function () {
	var menu = $(this);
	$(".nv4").css({background:"url(http://painfoundation.org/assets/images/newsite/images/nav4-off.jpg) no-repeat"});
	menu.children("ul.top_menu4").slideUp();
	}       // function = onMouseOut callback (required)
	});
	
	


});