function onRollover(thumb){
	this[thumb].src = "images/nav/"+thumb+"_on.gif";
	
}
function onRollout(thumb){
	this[thumb].src = "images/nav/"+thumb+"_off.gif";
}

function thumbPosition(left,top){
	return ("left:"+left*100+";top:"+top*100+"px;")
}

function preloadImages(){

	if (document.images){
	  pic1= new Image(388,85); 
	  pic1.src="images/nav/header.gif"; 
	
	  pic2= new Image(43,13); 
	  pic2.src="images/nav/street_off.gif"; 
	  
	  pic3= new Image(43,13); 
	  pic3.src="images/nav/street_on.gif"; 
	  
	  pic4= new Image(47,13); 
	  pic4.src="images/nav/studio_off.gif"; 
	  
	  pic5= new Image(47,13); 
	  pic5.src="images/nav/studio_on.gif"; 
	  
	  pic6= new Image(41,13); 
	  pic6.src="images/nav/press_off.gif"; 
	  
	  pic7= new Image(41,13); 
	  pic7.src="images/nav/press_on.gif"; 
	  
	  pic8= new Image(45,13); 
	  pic8.src="images/nav/about_off.gif"; 
	  
	  pic9= new Image(45,13); 
	  pic9.src="images/nav/about_on.gif"; 
	  
	  pic10= new Image(56,13); 
	  pic10.src="images/nav/contact_off.gif"; 
	  
	  pic11= new Image(56,13); 
	  pic11.src="images/nav/contact_on.gif"; 
			
	  pic12= new Image(39,13); 
	  pic12.src="images/nav/news_off.gif"; 

	  pic13= new Image(39,13); 
	  pic13.src="images/nav/news_on.gif";
	
	  pic14= new Image(26,10); 
	  pic14.src="images/nav/_2006_on.gif";
	
	  pic15= new Image(26,10); 
	  pic15.src="images/nav/_2006_off.gif";
	
	  pic16= new Image(26,10); 
	  pic16.src="images/nav/_2007_on.gif";

	  pic17= new Image(26,10); 
	  pic17.src="images/nav/_2007_off.gif";
	
	  pic18= new Image(26,10); 
	  pic18.src="images/nav/_2008_on.gif";

	  pic19= new Image(26,10); 
	  pic19.src="images/nav/_2008_off.gif";
	
	  pic20= new Image(26,10); 
	  pic20.src="images/nav/_2009_on.gif";

	  pic21= new Image(26,10); 
	  pic21.src="images/nav/_2009_off.gif";
	
	  pic22= new Image(26,10); 
	  pic22.src="images/nav/_2010_on.gif";

	  pic23= new Image(26,10); 
	  pic23.src="images/nav/_2010_off.gif";
	}
	
	
	
}

preloadImages();