function addLoadEvent(func) {
  var oldonload = window.onload;
  if (typeof window.onload != 'function') {
    window.onload = func;
  } else {
    window.onload = function() {
      oldonload();
      func();
    }
  }
}

addLoadEvent(randomImg);


// Random Image
// -----------------

function randomImg() {
	var Pic = new Array;
	Pic[0] = 'banner1';
	Pic[1] = 'banner2';
	Pic[2] = 'banner3';
	Pic[3] = 'banner4';
	Pic[4] = 'banner5';
	Pic[5] = 'banner6';
	var imgnum = Math.round(Math.random()*5);
	newImage = document.getElementById("logo");
	newImage.className = Pic[imgnum];
}


function swapImage(name) {
	if (document.layers) 
		return document.layers[name];
	else if (document.all)
		return document.all[name];
	else if (document.getElementById)
		return document.getElementById(name);
}
function showPic (whichpic) {
	swapImage('placeholder').src = whichpic.href;
 	return false;
}