function Buttonon(imag){
		document[imag].src = eval(imag+"on.src")
	}

	function Buttonoff(imag){
		document[imag].src = eval(imag+".src");

	}	

if(document.images){
	// *********** Buttons Off ***************************
             
			 about = new Image();      
             about.src = "images/header/about_g.gif"; 
		 	 
			 info = new Image();      
             info.src = "images/header/information_g.gif"; 
			 
			 act = new Image();      
             act.src = "images/header/act_g.gif"; 

			 edit = new Image();      
             edit.src = "images/header/editorial_g.gif"; 			
			 
			 links = new Image();      
             links.src = "images/header/links_g.gif"; 
			 
			
			 
	// *********** Buttons On ********************************
			       
			 abouton = new Image();      
             abouton.src = "images/header/about_on.gif"; 
			 
			 infoon = new Image();      
             infoon.src = "images/header/information_on.gif"; 
			 
			 acton = new Image();      
             acton.src = "images/header/act_on.gif"; 

			 editon = new Image();      
             editon.src = "images/header/editorial_on.gif"; 			
			 
			 linkson = new Image();      
             linkson.src = "images/header/links_on.gif"; 			 
			
			}