if (document.images) {	

   	side_menu1_1= new Image();				side_menu1_1.src="images/navigation/side_menu1_1a.gif";  
	side_menu2_1= new Image();				side_menu2_1.src="images/navigation/side_menu1_1a.gif";  
	side_menu2_2= new Image();				side_menu2_2.src="images/navigation/side_menu2_2a.gif";  
	side_menu3_1= new Image();				side_menu3_1.src="images/navigation/side_menu3_1a.gif";  

   	side_menu3_2_on= new Image();			side_menu3_2_on.src="images/navigation/side_menu3_2b.gif";  
	side_menu3_2_off= new Image(); 			side_menu3_2_off.src="images/navigation/side_menu3_2a.gif";

   	side_menu3_3_on= new Image();			side_menu3_3_on.src="images/navigation/side_menu3_3b.gif";  
	side_menu3_3_off= new Image(); 			side_menu3_3_off.src="images/navigation/side_menu3_3a.gif";

   	side_menu3_4_on= new Image();			side_menu3_4_on.src="images/navigation/side_menu3_4b.gif";  
	side_menu3_4_off= new Image(); 			side_menu3_4_off.src="images/navigation/side_menu3_4a.gif";

   	side_menu3_5_on= new Image();			side_menu3_5_on.src="images/navigation/side_menu3_5b.gif";  
	side_menu3_5_off= new Image(); 			side_menu3_5_off.src="images/navigation/side_menu3_5a.gif";

   	side_menu3_6_on= new Image();			side_menu3_6_on.src="images/navigation/side_menu3_6b.gif";  
	side_menu3_6_off= new Image(); 			side_menu3_6_off.src="images/navigation/side_menu3_6a.gif";

   	side_menu3_7_on= new Image();			side_menu3_7_on.src="images/navigation/side_menu3_7b.gif";  
	side_menu3_7_off= new Image(); 			side_menu3_7_off.src="images/navigation/side_menu3_7a.gif";

   	side_menu3_8_on= new Image();			side_menu3_8_on.src="images/navigation/side_menu3_8b.gif";  
	side_menu3_8_off= new Image(); 			side_menu3_8_off.src="images/navigation/side_menu3_8a.gif";
		
   	side_menu3_9_on= new Image();			side_menu3_9_on.src="images/navigation/side_menu3_9b.gif";  
	side_menu3_9_off= new Image(); 			side_menu3_9_off.src="images/navigation/side_menu3_9a.gif";	
}