if (document.images) {

	
		home = new Image();
		home.src = "images/nav_home.gif";
		home_on = new Image();
		home_on.src = "images/nav_home_on.gif";
		
		properties = new Image();
		properties.src = "images/nav_properties.gif";
		properties_on = new Image();
		properties_on.src = "images/nav_properties_on.gif";
		
		land = new Image();
		land.src = "images/nav_land.gif";
		land_on = new Image();
		land_on.src = "images/nav_land_on.gif";
		
		rentals = new Image();
		rentals.src = "images/nav_rentals.gif";
		rentals_on = new Image();
		rentals_on.src = "images/nav_rentals_on.gif";
		
		agents = new Image();
		agents.src = "images/nav_agents.gif";
		agents_on = new Image();
		agents_on.src = "images/nav_agents_on.gif";
		
		directions = new Image();
		directions.src = "images/nav_directions.gif";
		directions_on = new Image();
		directions_on.src = "images/nav_directions_on.gif";
		
		about = new Image();
		about.src = "images/nav_about.gif";
		about_on = new Image();
		about_on.src = "images/nav_about_on.gif";
		
		contact = new Image();
		contact.src = "images/nav_contact.gif";
		contact_on = new Image();
		contact_on.src = "images/nav_contact_on.gif";
		
				
	}
	
	function swap(imgName,objName) {
		if (document.images) {
			document[objName].src = eval(imgName + ".src");
		}
	}
	
	function popup(url,name,w,h) {
		popupWin = eval('window.open(url,name,"width='+w+',height='+h+',left=10,top=10,scrollbars=no,resizable=no")');
	}