function preload()
 {	
  var a_01 = new Image();
  a_01.src = "x_images/screw_over.gif";	  
   
  var b_01 = new Image();
  b_01.src = "x_images/nav_link_clients_over.gif";	   
  var b_02 = new Image();
  b_02.src = "x_images/nav_link_company_over.gif";	   
  var b_03 = new Image();
  b_03.src = "x_images/nav_link_home_over.gif";	 
  var b_04 = new Image();
  b_04.src = "x_images/nav_link_contact_over.gif";	 
  var b_05 = new Image();
  b_05.src = "x_images/nav_link_team_over.gif";	
  var b_05 = new Image();
  b_05.src = "x_images/nav_link_products_over.gif";	
  
 }