//this sets W3C DHTML specification values used in NN6 & IE5.5
if (document.getElementById) {
	visible = 'visible';
	hidden = 'hidden';
	//this sets Netscape values
} else if (document.layers) {
  visible = 'show';
  hidden = 'hide';
//this sets IE values
} else if (document.all) {
  visible = 'visible';
  hidden = 'hidden';
}

var lastItem = 'div0';

function showMenu(item) {
  if (document.all) {
    hideLast = document.all[lastItem].style;
    showItem = document.all[item].style;
  } else if (document.layers) {
    hideLast = document.layers[lastItem];
    showItem = document.layers[item];
  } else if (document.getElementById) {
  	hideLast = document.getElementById(lastItem).style;
	showItem = document.getElementById(item).style;
  }
  hideLast.visibility = hidden;
  showItem.visibility = visible;
  lastItem = item;
}

function breakout_of_frame()
{
  // see http://www.thesitewizard.com/archive/framebreak.shtml
  // for an explanation of this script and how to use it on your
  // own website
  if (top.location != location) {
    top.location.href = document.location.href ;
  }
}