if (document.images) {	
	
   	sub_people1_on = new Image();				sub_people1_on.src="images/navigation/sub_people1b.gif";  
	sub_people1_off = new Image(); 				sub_people1_off.src="images/navigation/sub_people1a.gif";  
	
   	sub_people2_on = new Image();				sub_people2_on.src="images/navigation/sub_people2b.gif";  
	sub_people2_off = new Image(); 				sub_people2_off.src="images/navigation/sub_people2a.gif";  
	
   	sub_people3_on = new Image();				sub_people3_on.src="images/navigation/sub_people3b.gif";  
	sub_people3_off = new Image(); 				sub_people3_off.src="images/navigation/sub_people3a.gif";  

   	sub_people4_on = new Image();				sub_people4_on.src="images/navigation/sub_people4b.gif";  
	sub_people4_off = new Image(); 				sub_people4_off.src="images/navigation/sub_people4a.gif";  
	
   	sub_people5_on = new Image();				sub_people5_on.src="images/navigation/sub_people5b.gif";  
	sub_people5_off = new Image(); 				sub_people5_off.src="images/navigation/sub_people5a.gif";  
	
}