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


function showOverlays() {
	var divs = document.getElementsByTagName('DIV');
	for (var d = 0; d < divs.length; d++) { 
		var div = divs[d];
		if (div.className == 'iconOverlay_fmt') {
			div.style.display = 'block';
			var doFilter = ((/MSIE/.test(navigator.userAgent)) && (navigator.platform == "Win32"));
			if (doFilter && div.runtimeStyle) {		//replace backgroundImage with png filter.
				var src = div.style.backgroundImage;
				src = src.replace(')', '');
				src = src.replace('url(', '')
				if (/\.png$/.test( src.toLowerCase() )) {		//check it's a png too
					div.runtimeStyle.backgroundImage = 'url(none)';
					div.runtimeStyle.filter = "progid:DXImageTransform.Microsoft.AlphaImageLoader(src='" + src + "',sizingMethod='scale')";
				}
			}
		}
	}
}