if (document.images) {

   	residences_off = new Image();
   	residences_off.src = "images/nav_residences-off.gif";
   	residences_on = new Image();
   	residences_on.src = "images/nav_residences-on.gif";

   	lifestyle_off = new Image();
   	lifestyle_off.src = "images/nav_lifestyle-off.gif";
   	lifestyle_on = new Image();
   	lifestyle_on.src = "images/nav_lifestyle-on.gif";
   	
   	area_off = new Image();
   	area_off.src = "images/nav_area-off.gif";
   	area_on = new Image();
   	area_on.src = "images/nav_area-on.gif";     	
   	   
   	developer_off = new Image();
   	developer_off.src = "images/nav_developer-off.gif";
   	developer_on = new Image();
   	developer_on.src = "images/nav_developer-on.gif";   	
   	
   	contact_off = new Image();
   	contact_off.src = "images/nav_contact-off.gif";
   	contact_on = new Image();
   	contact_on.src = "images/nav_contact-on.gif";   	
   	   	
}






function imgOn(imgName) {
	if (document.images) {
		document[imgName].src = eval(imgName + "_on.src")
	}
}

function imgOff(imgName) {
	if (document.images) {
   		document[imgName].src = eval(imgName + "_off.src")
   	}
}