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		toc1an = new Image(142, 24); // picture size
		toc1an.src = "images/students_on.gif"; // URL of picture for mous on it
		toc2an = new Image(142, 24); // picture size
		toc2an.src = "images/dept_ON.gif"; // URL of picture for mous on it
		toc3an = new Image(142, 24);
		toc3an.src = "images/center_ON.gif"; 
        toc4an = new Image(142, 24);
		toc4an.src = "images/elearning_ON.gif"; 
        toc5an = new Image(142, 24); 
		toc5an.src = "images/recruit_ON.gif";
        toc6an = new Image(142, 24); 
		toc6an.src = "images/lib_ON.gif"; 
		toc7an = new Image(142, 24); 
		toc7an.src = "images/magazine_ON.gif"; 
		toc8an = new Image(142, 24); 
		toc8an.src = "images/services_ON.gif"; 
		toc9an = new Image(142, 24); 
		toc9an.src = "images/forum_ON.gif"; 
		toc10an = new Image(142, 24); 
		toc10an.src = "images/chat_ON.gif"; 
		toc11an = new Image(142, 24); 
		toc11an.src = "images/listen_ON.gif"; 	  
		toc12an = new Image(142, 24); 
		toc12an.src = "images/eservices.gif"; 	  
                      
		toc13an = new Image(142, 24); 
		toc13an.src = "images/Archive_ON.gif"; 	  


                        
        toc1aus = new Image(142, 24); // picture size	
        	toc1aus.src = "images/students.gif"; // URL of picture for mouse not on it
        toc2aus = new Image(142, 24); // picture size	
          	toc2aus.src = "images/dept.gif"; // URL of picture for mouse not on it
        toc3aus = new Image(142, 24);	
          	toc3aus.src = "images/center.gif"; 
        toc4aus = new Image(142, 24); 
           	toc4aus.src = "images/elearning.gif"; 
        toc5aus = new Image(142, 24);
           	toc5aus.src = "images/recruit.gif"; 
        toc6aus = new Image(142, 24); 
          	toc6aus.src = "images/lib.gif"; 
		toc7aus = new Image(142, 24); 
          	toc7aus.src = "images/magazine.gif"; 
		toc8aus = new Image(142, 24); 
          	toc8aus.src = "images/services.gif"; 
		toc9aus = new Image(142, 24); 
          	toc9aus.src = "images/forum.gif"; 
		toc10aus = new Image(142, 24); 
          	toc10aus.src = "images/chat.gif"; 
		toc11aus = new Image(142, 24); 
          	toc11aus.src = "images/listen.gif"; 
		toc12aus = new Image(142, 24); 
          	toc12aus.src = "images/eservices_ON.gif"; 
                     
		toc13aus = new Image(142, 24); 
          	toc13aus.src = "images/Archive.gif"; 

                        
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			imgOn = eval(imgName + "an.src");
        			document [imgName].src = imgOn;
		}
		function img_inact(imgName) {
			imgOff = eval(imgName + "aus.src");
			document [imgName].src = imgOff;
		}