function getElementsByClassName(classname) {
    if (document.getElementsByTagName) {
         var els = document.getElementsByTagName("*");
         var c = new RegExp('/b^|' + classname + '|$/b');
         final = new Array();
         var n=0;
         for (var i=0; i < els.length; i++) {
              if (els[i].className) {
                   if(c.test(els[i].className)) {
                   final[n] = els[i];
                   n++;
                   }
              }
         }
         return final;
    } else return false;
}

function ieFix(){
	//browser detection
	var browserName=navigator.appName; 
	var browserVer=parseInt(navigator.appVersion); 
	if (browserName=="Microsoft Internet Explorer" && browserVer <= 7) {
		var navelements = getElementsByClassName('ulnav');
		for (j=0; j < navelements.length; j++) {
			navRoot = navelements[j];
			for (i=0; i<navRoot.childNodes.length; i++) {
				node = navRoot.childNodes[i];
				if (node.nodeName=="LI") {
					node.onmouseover=function() {
						this.className+=" over";
					}
					 node.onmouseout=function() {
						this.className=this.className.replace(" over", "");
					}
				}
			}
		}
	} //end browser detection
}

/* Twitter cycle AJAX - Jason - 2010-06-04 */
function cycleTweets()
{
		new Ajax.Request('/includes/Twitter.AJAX.php',
		{
			method: 'get',
			onSuccess: function(transport)
			{
				var data = transport.responseText || "no Ajax response";
				//new Effect.Fade('twitter-content-area', 
				new Effect.DropOut('twitter-content-area', 
				{ 
					afterFinish: function()
					{
						$('twitter-content-area').update(data);
						//new Effect.Appear('twitter-content-area');
						new Effect.SlideDown('twitter-content-area');
					}
				});
			},
			onFailure: function()
			{
				
			}
			
		});
}



onload = function(){	//do onload stuff here	
	ieFix();
	cycleTweets(); /* kick off the initial one */
	new PeriodicalExecuter(cycleTweets, 8);
}