if (document.images) {	
		
   	bottom1_on= new Image();			bottom1_on.src="images/tots/bottom1lb.gif";  
   	bottom1_off= new Image();			bottom1_off.src="images/tots/bottom1la.gif";  
	
   	bottom2_on= new Image();			bottom2_on.src="images/tots/bottom2lb.gif";  		
   	bottom2_off= new Image();			bottom2_off.src="images/tots/bottom2la.gif";  
	
   	bottom3_on= new Image();			bottom3_on.src="images/tots/bottom3lb.gif";  
   	bottom3_off= new Image();			bottom3_off.src="images/tots/bottom3la.gif";  
 
	top2_on= new Image();				top2_on.src="images/tots/top2lb.gif";  		
   	top2_off= new Image();				top2_off.src="images/tots/top2la.gif";  
}