if (document.images)
 {
   nav1= new Image(220,32);
   nav1.src="images/nav1.gif";  
   nav2= new Image(220,32);
   nav2.src="images/nav2.gif";
nav3= new Image(220,32);
   nav3.src="images/nav3.gif";
nav4= new Image(220,32);
   nav4.src="images/nav4.gif";
nav5= new Image(220,32);
   nav5.src="images/nav5.gif";
nav6= new Image(220,32);
   nav6.src="images/nav6.gif";
nav7= new Image(220,32);
   nav7.src="images/nav7.gif";
nav8= new Image(220,32);
   nav8.src="images/nav8.gif";
nav9= new Image(220,32);
   nav9.src="images/nav9.gif";

 	 nav1_over= new Image(220,32);
   nav1_over.src="images/nav1_over.gif";  
   nav2_over= new Image(220,32);
   nav2_over.src="images/nav2_over.gif";
nav3_over= new Image(220,32);
   nav3_over.src="images/nav3_over.gif";
nav4_over= new Image(220,32);
   nav4_over.src="images/nav4_over.gif";
nav5_over= new Image(220,32);
   nav5_over.src="images/nav5_over.gif";
nav6_over= new Image(220,32);
   nav6_over.src="images/nav6_over.gif";
nav7_over= new Image(220,32);
   nav7_over.src="images/nav7_over.gif";
nav8_over= new Image(220,32);
   nav8_over.src="images/nav8_over.gif";
nav9_over= new Image(220,32);
   nav9_over.src="images/nav9_over.gif";
 
 }

function roll(img_nav, img_over)
{
 if (document.images)
  {
    rollnav=eval(img_over + ".src");
    document[img_nav].src= rollnav;
  }
}

function showfriend()
{
var location = new String(document.location);
url = "http://www.medalmaster.co.uk/friendform.htm?"+escape(location);
var window_width = 320;
var window_height = 280;
var sw = screen.width;
var sh = screen.height;
var window_left = ((sw/4) - (window_width/4) - 16);
var window_top = ((sh/4) - (window_height/4) - 20);
friendwin = open(url,"friend","width="+ window_width +",height="+ window_height +",scrollbars=no,toolbar=no,directories=no,menubar=no,resizable=yes,status=no,left="+ window_left +",top="+ window_top +",screenx="+ window_left +",screeny="+ window_top);
}