function toggleVis(index, classa, classb) 
{
  var d = document.getElementById(index);

  if (d.className==classa)
  {
    d.className=classb;
  } 
  else 
  {
    d.className=classa;
  }
}

function popup(url,w,h)
{
	win = window.open(url,"popup","width="+w+",height="+h+",left=40,top=40, scrollbars=yes");		
	win.focus();			
}

function swapImg(img,over)
{
  if (over) var new_file = img.src.substr(0,img.src.length-5)+"2."+img.src.substr(img.src.length-3,img.src.length);
  else var new_file = img.src.substr(0,img.src.length-5)+"1."+img.src.substr(img.src.length-3,img.src.length);
  img.src = new_file;
}

function swapImgDyn(img,color)
{
  img.src = img.src.substr(0,img.src.length-6)+color;
}