if (document.images){
  pic1= new Image(13,109); 
  pic1.src="images/subExperUn.jpg"; 
  pic2= new Image(13,95); 
  pic2.src="images/subIneractive.jpg";
  pic3= new Image(13,54); 
  pic3.src="images/subPrintUn.jpg"; 
  pic4= new Image(41,58); 
  pic4.src="images/ssNav/1c.jpg"; 
  pic5= new Image(41,58); 
  pic5.src="images/ssNav/2c.jpg"; 
  pic6= new Image(41,58); 
  pic6.src="images/ssNav/3c.jpg"; 
  pic7= new Image(41,58); 
  pic7.src="images/ssNav/4c.jpg"; 
  pic8= new Image(15,15); 
  pic8.src="images/changeSSc.jpg"; 
}