var galleryHrOff = new Image();
	galleryHrOff.src = "gfx/menu/gallery_off.gif";
var galleryHrOn = new Image();
	galleryHrOn.src = "gfx/menu/gallery_hr.gif";
	
var galleryOff = new Image();
	galleryOff.src = "gfx/menu/gallery_d.gif";
var galleryOn = new Image();
	galleryOn.src = "gfx/menu/gallery_b.gif";
	

	
var bioHrOff = new Image();
	bioHrOff.src = "gfx/menu/bio_off.gif";
var bioHrOn = new Image();
	bioHrOn.src = "gfx/menu/bio_hr.gif";
	
var bioOff = new Image();
	bioOff.src = "gfx/menu/bio_d.gif";
var bioOn = new Image();
	bioOn.src = "gfx/menu/bio_b.gif";
	
	
	
var resumeHrOff = new Image();
	resumeHrOff.src = "gfx/menu/res_off.gif";
var resumeHrOn = new Image();
	resumeHrOn.src = "gfx/menu/res_hr.gif";
	
var resumeOff = new Image();
	resumeOff.src = "gfx/menu/res_d.gif";
var resumeOn = new Image();
	resumeOn.src = "gfx/menu/res_b.gif";
	
	
	
var contactHrOff = new Image();
	contactHrOff.src = "gfx/menu/con_off.gif";
var contactHrOn = new Image();
	contactHrOn.src = "gfx/menu/con_hr.gif";
	
var contactOff = new Image();
	contactOff.src = "gfx/menu/con_d.gif";
var contactOn = new Image();
	contactOn.src = "gfx/menu/con_b.gif";
	
	
	
var teachingHrOff = new Image();
	teachingHrOff.src = "gfx/menu/teaching_off.gif";
var teachingHrOn = new Image();
	teachingHrOn.src = "gfx/menu/teaching_hr.gif";
	
var teachingOff = new Image();
	teachingOff.src = "gfx/menu/teaching_d.gif";
var teachingOn = new Image();
	teachingOn.src = "gfx/menu/teaching_b.gif";	


function rollover(id){
	
	if(id == "galleries"){
		document.getElementById("galleries_hr").src = galleryHrOn.src;	
		document.getElementById("galleries").src = galleryOn.src;	
		
	} else if (id == "bio") {	
		document.getElementById("bio_hr").src = bioHrOn.src;
		document.getElementById("bio").src = bioOn.src;
		
	} else if (id == "resume") {
		document.getElementById("resume_hr").src = resumeHrOn.src;
		document.getElementById("resume").src = resumeOn.src;
	
	} else if (id == "contact") {
		document.getElementById("contact_hr").src = contactHrOn.src;
		document.getElementById("contact").src = contactOn.src;
		
	} else if (id == "teaching") {	
		document.getElementById("teaching_hr").src = teachingHrOn.src;
		document.getElementById("teaching").src = teachingOn.src;
		
	} 

}


function rolloff(id){


	if(id == "galleries"){
	
		document.getElementById("galleries_hr").src = galleryHrOff.src;
		document.getElementById("galleries").src = galleryOff.src;
		
	} else if (id == "bio") {
		document.getElementById("bio_hr").src = bioHrOff.src;
		document.getElementById("bio").src = bioOff.src;	
		
	} else if (id == "resume") {
		document.getElementById("resume_hr").src = resumeHrOff.src;
		document.getElementById("resume").src = resumeOff.src;
	
	} else if (id == "contact") {
		document.getElementById("contact_hr").src = contactHrOff.src;
		document.getElementById("contact").src = contactOff.src;
		
	}  else if (id == "teaching") {
		document.getElementById("teaching_hr").src = teachingHrOff.src;
		document.getElementById("teaching").src = teachingOff.src;
	
	} 
	
}