<!--

if (document.images) {
  image1on = new Image();
  image1on.src = "images/sil2.gif";

 

  image1off = new Image();
  image1off.src = "images/sil1.gif";

  
  

  


}

function changeImages() {
  if (document.images) {
    for (var i=0; i<changeImages.arguments.length; i+=2) {
      document[changeImages.arguments[i]].src = eval(changeImages.arguments[i+1] + ".src");
    }
  }
}
function alterCate(elm, onoff)
{
	if (typeof(onoff) == "undefined" )
	{
		onoff = "blur";
	}

	if (!elm.base)
	{
		elm.base = elm.value;
	}

	if (elm.value == elm.base && onoff != "blur")
	{
		elm.value = "";
	}
	else if (elm.value == "" && onoff == "blur")
	{
		elm.value = elm.base;
	}
}

// -->