// JavaScript Document
if (document.images){
     indexup= new Image(93,22);
     indexup.src="/images/menu/index.png";
	 
	 indexdown= new Image(93,22);
     indexdown.src="/images/menu/index_over.png";
	 
	 bioup= new Image(122,22);
     bioup.src="/images/menu/bio.png";
	 
	 biodown= new Image(122,22);
     biodown.src="/images/menu/bio_over.png";
	 
	 contactup= new Image(107,22);
     contactup.src="/images/menu/contact.png";
	 
	 contactdown= new Image(107,22);
     contactdown.src="/images/menu/contact_over.png";
	 
	 educationup= new Image(122,22);
     educationup.src="/images/menu/education.png";
	 
	 educationdown= new Image(122,22);
     educationdown.src="/images/menu/education_over.png";
	
}
function roll_over(img_name, img_src){
	document[img_name].src = img_src;
}