//this highlights the topnav link, which is set in the body tag
var currentpage = "none";
	
	function setPage(pagename){
		if (document.images[currentpage]){
			document.images[currentpage].src = eval(currentpage).src;
		}
			if (pagename != 'none' && document.images[pagename]){
				document.images[pagename].src = eval(pagename+"on").src;
			}
			currentpage = pagename;
		}
		
//this preloads all the images
if (document.images) {
		
		//topnav
		nav_home_on= new Image;
     	nav_home_on.src="images/nav_home_on.jpg";  
     	nav_home= new Image;
     	nav_home.src="images/nav_home.jpg";
		
		nav_options_on= new Image;
     	nav_options_on.src="images/nav_options_on.jpg";  
     	nav_options= new Image;
     	nav_options.src="images/nav_options.jpg";
		
		nav_program_on= new Image;
     	nav_program_on.src="images/nav_program_on.jpg";  
     	nav_program= new Image;
     	nav_program.src="images/nav_program.jpg";
		
		nav_about_on= new Image;
     	nav_about_on.src="images/nav_about_on.jpg";  
     	nav_about= new Image;
     	nav_about.src="images/nav_about.jpg";
		
		nav_start_on= new Image;
     	nav_start_on.src="images/nav_start_on.jpg";  
     	nav_start= new Image;
     	nav_start.src="images/nav_start.jpg";
  }
  
 //rollover function for single images
 function rollImage(imagename,imageloc){
		if (currentpage != imageloc){
			document.images[imageloc].src = imagename.src;
		}
	}
	
//order popup window
function openAWindow( pageToLoad, winName, width, height, center) {  
	xposition=100; yposition=50;

    if ((parseInt(navigator.appVersion) >= 4 ) && (winName=="undefined")){
    xposition=screen.width-100; yposition=screen.height-50;
    }
    args = "width=" + width + "," 
    + "height=" + height + "," 
    + "location=0," 
    + "menubar=0,"
    + "resizable=0,"
    + "scrollbars=1,"
    + "status=0," 
    + "titlebar=0,"
    + "toolbar=0,"
    + "hotkeys=0,"
    + "screenx=" + xposition + ","  //NN Only
    + "screeny=" + yposition + ","  //NN Only
    + "left=" + xposition + ","     //IE Only
    + "top=" + yposition;           //IE Only

    window.open( pageToLoad,winName,args );
	}
	
//shipping popup window
function openAshipWindow( pageToLoad, winName, width, height, center) {  
	xposition=150; yposition=100;

    if ((parseInt(navigator.appVersion) >= 4 ) && (winName=="undefined")){
    xposition=screen.width-150; yposition=screen.height-100;
    }
    args = "width=" + width + "," 
    + "height=" + height + "," 
    + "location=0," 
    + "menubar=0,"
    + "resizable=0,"
    + "scrollbars=0,"
    + "status=0," 
    + "titlebar=0,"
    + "toolbar=0,"
    + "hotkeys=0,"
    + "screenx=" + xposition + ","  //NN Only
    + "screeny=" + yposition + ","  //NN Only
    + "left=" + xposition + ","     //IE Only
    + "top=" + yposition;           //IE Only

    window.open( pageToLoad,winName,args );
	}