function initialize(){
if (document.images)
    {
        n1 = new Image();
        n1.src = "../images/b1.gif"; 

        o1 = new Image();
        o1.src = "../images/bt1.gif"; 


		    n2 = new Image();
        n2.src = "../images/b2.gif"; 

        o2 = new Image();
        o2.src = "../images/bt2.gif"; 


	     	n3 = new Image();
        n3.src = "../images/b3.gif"; 

        o3 = new Image();
        o3.src = "../images/bt3.gif"; 


		    n4 = new Image();
        n4.src = "../images/b4.gif"; 

        o4 = new Image();
        o4.src = "../images/bt4.gif"; 


		    n5 = new Image();
        n5.src = "../images/b5.gif"; 

        o5 = new Image();
        o5.src = "../images/bt5.gif"; 


		    n6 = new Image();
        n6.src = "../images/b6.gif"; 

        o6 = new Image();
        o6.src = "../images/bt6.gif";
        
        n7 = new Image();
        n7.src = "../images/b7.gif"; 

        o7 = new Image();
        o7.src = "../images/bt7.gif"; 


		    n8 = new Image();
        n8.src = "../images/b8.gif"; 

        o8 = new Image();
        o8.src = "../images/bt8.gif"; 



    var url = document.location.href;    
    var page = "index";
    
     if (url.match("behind")!=null)
     {
     page = "behindthelens";	 	    
        n2.src = "../images/btn2.gif"; 

        o2.src = "../images/btn2.gif"; 
        
        if (document.images) 
            {
             document.images['button'+ 2].src = eval('o' + 2).src;
            }        
      }



    if (url.match("doctors")!=null)
     {
     page = "imagedoctors";
        n3.src = "../images/btn3.gif"; 

        o3.src = "../images/btn3.gif"; 
      if (document.images) 
            {
             document.images['button'+ 3].src = eval('o' + 3).src;
            }        
      }


	     if (url.match("flash")!=null)
     {
     page = "newsflash";
        n4.src = "../images/btn4.gif"; 

        o4.src = "../images/btn4.gif"; 
        
        if (document.images) 
            {
             document.images['button'+ 4].src = eval('o' + 4).src;
            }        
      }


	     if (url.match("location")!=null)
     {
     page = "onlocation";

        n5.src = "../images/btn5.gif"; 

        o5.src = "../images/btn5.gif"; 
        
        if (document.images) 
            {
             document.images['button'+ 5].src = eval('o' + 5).src;
            }        
      }


	     if (url.match("turning")!=null)
     {
     page = "turningpro";
        n6.src = "../images/btn6.gif"; 

        o6.src = "../images/btn6.gif"; 
        
        if (document.images) 
            {
             document.images['button'+ 6].src = eval('o' + 6).src;
            }        
      }
         
        
	     if (url.match("tutorial")!=null)
     {
     page = "tutorial";
      }
        
   
     if (page=="index")
     {

        n1.src = "../images/btn1.gif"; 

        o1.src = "../images/btn1.gif"; 
        
        document.images['button'+ 1].src = eval('o' + 1).src;
      }
      
      if (page == "tutorial")
      {
      page = "index";
      }
     
        var link = "<a href=\"http://podcasts.nikonians.org/"+page+".xml\">";        
        return link;
            
    } 
                
}

function writeLink(page){
    document.write(page);
}


function mOver(num) 
        {
        if (document.images) 
            {
            document.images['button'+ num].src = eval('o' + num).src;
            }
        }
       
function mOut(num) 
        {
        if (document.images) 
            {
            document.images['button'+ num].src = eval('n' + num).src;
            }                   
        }