function backToTop() {
  var x1 = x2 = x3 = 0;
  var y1 = y2 = y3 = 0;
  if (document.documentElement) {
      x1 = document.documentElement.scrollLeft || 0;
      y1 = document.documentElement.scrollTop || 0;
  }
  if (document.body) {
      x2 = document.body.scrollLeft || 0;
      y2 = document.body.scrollTop || 0;
  }
  x3 = window.scrollX || 0;
  y3 = window.scrollY || 0;
  var x = Math.max(x1, Math.max(x2, x3));
  var y = Math.max(y1, Math.max(y2, y3));
  window.scrollTo(Math.floor(x / 2), Math.floor(y / 2));
  if (x > 0 || y > 0) {
      window.setTimeout("backToTop()", 25);
  }
}

function linkselect(form, sel)
{
	adrs = sel.options[sel.selectedIndex].value;
	if (adrs != "-" ) location.href = adrs;
}

$(function() { 
  $("img.rollover") 
    .each(function() { 
      var baseImage = $(this).attr("src"); 
      var ext = baseImage.substring(baseImage.lastIndexOf('.'), baseImage.length); 
      var overImage = baseImage.replace(ext, '_over' + ext); 
      new Image().src = overImage; 
      $(this).attr({basesrc: baseImage, oversrc: overImage}); 
    }) 
    .hover(function() { 
        $(this).attr({src: $(this).attr("oversrc")}); 
      }, 
      function() { 
        $(this).attr({src: $(this).attr("basesrc")}); 
    } 
  ); 
});