//Preload Images

matrix_on = new Image(56,13);
matrix_on.src = "images/nav_matrix_on.gif";			
matrix_off = new Image(56,13);
matrix_off.src = "images/nav_matrix_off.gif";	

cache_on = new Image(52,13);
cache_on.src = "images/nav_cache_on.gif";			
cache_off = new Image(52,13);
cache_off.src = "images/nav_cache_off.gif";	

nexus_on = new Image(52,13);
nexus_on.src = "images/nav_nexus_on.gif";			
nexus_off = new Image(52,13);
nexus_off.src = "images/nav_nexus_off.gif";	

visage_on = new Image(54,13);
visage_on.src = "images/nav_visage_on.gif";			
visage_off = new Image(54,13);
visage_off.src = "images/nav_visage_off.gif";	

prev_on = new Image(47,13);
prev_on.src = "images/nav_prev_on.gif";			
prev_off = new Image(47,13);
prev_off.src = "images/nav_prev_off.gif";	

next_on = new Image(47,13);
next_on.src = "images/nav_next_on.gif";			
next_off = new Image(47,13);
next_off.src = "images/nav_next_off.gif";	

cachenav_la_on = new Image(32,15);
cachenav_la_on.src = "images/cachenav_la_on.gif";			
cachenav_la_off = new Image(32,15);
cachenav_la_off.src = "images/cachenav_la_off.gif";	

cachenav_sg_on = new Image(30,15);
cachenav_sg_on.src = "images/cachenav_sg_on.gif";			
cachenav_sg_off = new Image(30,15);
cachenav_sg_off.src = "images/cachenav_sg_off.gif";	

cachenav_sh_on = new Image(30,15);
cachenav_sh_on.src = "images/cachenav_sh_on.gif";			
cachenav_sh_off = new Image(30,15);
cachenav_sh_off.src = "images/cachenav_sh_off.gif";	


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

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

function popup_win(url,w,h) {
	window.open(url,"preview","width="+w+",height="+h);
}