function show(div_id) {
                document.getElementById(div_id+"_wrapper").style.top = 91;
                document.getElementById(div_id).style.display="block";
            }
            
            function hide(div_id) {
                document.getElementById(div_id+"_wrapper").style.top = -500;
                document.getElementById(div_id).style.display="none";
            }

            function hover(img) {
				img.src = img.src.replace('.gif','_hover.gif');
            }

            function unhover(img) {
				img.src = img.src.replace('_hover.gif','.gif');
            }

           function preload_images() {
                if (document.images) {
                    pic1= new Image(); pic1.src="images/HistoryAndVision_menu_hover.gif"; 
                    pic2= new Image(); pic2.src="images/AmyPurdy_menu_hover.gif"; 
                    pic3= new Image(); pic3.src="images/DanielGale_menu_hover.gif"; 
                    pic4= new Image(); pic4.src="images/GaryMoore_menu_hover.gif"; 
                    pic5= new Image(); pic5.src="images/BoardAndStaff_menu_hover.gif"; 
                    pic6= new Image(); pic6.src="images/ContactUs_menu_hover.gif"; 
                
                    pic7= new Image();   pic7.src="images/News_menu_hover.gif"; 
                    pic8= new Image();   pic8.src="images/Events_menu_hover.gif"; 
                    pic9= new Image();   pic9.src="images/Media_menu_hover.gif"; 
                    pic10= new Image(); pic10.src="images/Grants_menu_hover.gif"; 

                    pic11= new Image(); pic11.src="images/AmpedRiders_menu_hover.gif"; 
                    pic12= new Image(); pic12.src="images/Athletes_menu_hover.gif"; 
                    pic13= new Image(); pic13.src="images/Artists_menu_hover.gif"; 
                    
                    pic14= new Image(); pic14.src="images/Donations_menu_hover.gif"; 
                    pic15= new Image(); pic15.src="images/Sponsorships_menu_hover.gif"; 
                    pic16= new Image(); pic16.src="images/AASProductStore_menu_hover.gif"; 
                }
            }