var nmenu = 3;
var address = ["event", "pr", "about", "contact"];
var width = ["137", "113", "64", "85"];
var curk = 99;

nav = new Array;
nav_o = new Array;

// MouseOver Function

function navSwapOn(button) {
   if(document.images) {
      document.images['nav'+button].src = nav_o[button].src;
      if (curk != 99) {
        document.images['nav'+curk].src = nav[curk].src;
      }
   }
}

// MouseOut Function

function navSwapOff(button) {
   if(document.images) {
      document.images['nav'+button].src = nav[button].src;
      if (curk != 99) {
        document.images['nav'+curk].src = nav_o[curk].src;
      }
   }
}

for (k=0; k<=nmenu; k++) {
  nav[k] = new Image;
  nav[k].src = 'img/b_'+address[k]+'.jpg';
  nav_o[k] = new Image;
  nav_o[k].src = 'img/b_'+address[k]+'_o.jpg';
  if (address[k] == curmenu) {
       curk = k;
       document.write('<A HREF="'+address[k]+'.html"><IMG SRC="'+eval('nav_o['+k+'].src')+
                      '" BORDER="0" NAME="nav'+k+'" WIDTH='+width[k]+' HEIGHT=30></A>');
  } else {
       document.write('<A HREF="'+address[k]+'.html" ');
       document.write('onMouseOver="navSwapOn('+k+')" onMouseOut="navSwapOff('+k+')">');
       document.write('<IMG SRC="'+eval('nav['+k+'].src')+
                      '" BORDER="0" NAME="nav'+k+'" WIDTH='+width[k]+' HEIGHT=30></A>');
  }
  if (k != nmenu) {
       document.write('<IMG SRC="img/sep.jpg" WIDTH=10 HEIGHT=30>');
  }
}