$(document).ready( function(){
							
$('#navigation img').hover(function() {
		var currentImg = $(this).attr('src');
		$(this).attr('src', $(this).attr('hover'));
		$(this).attr('hover', currentImg);
	}, function() {
		var currentImg = $(this).attr('src');
		$(this).attr('src', $(this).attr('hover'));
		$(this).attr('hover', currentImg);
	});


	$("#navigation img").each(function() {
		rollsrc = $(this).attr("src");
		rollON = rollsrc.replace(/btn$/ig,"on_btn");
		$("<img>").attr("src", rollON);
	});
    
});


function AjaxBH() {
	
	this.setup = function() {
		var requestObj;
		try {
			requestObj = new ActiveXObject("Microsoft.XMLHTTP");
		}
		catch(e) {
			requestObj = new XMLHttpRequest();
		}
		return requestObj;
	}
	
	this.get = function(url, func) {
		var http = this.setup();
		http.open("GET", url, true);
		http.onreadystatechange = function() { func(http); }
		http.send(null);
	}
	
	this.post = function(url, func) {
		var http = this.setup();
		var parts = url.split("?");
		var script = parts[0]; 	url = parts[1];
		http.open("POST", script, true);
		http.onreadystatechange = function() {func(http); }
		http.setRequestHeader("Content-Length", script.length + url.length + 100);
		http.setRequestHeader("Content-Type", "application/x-www-form-urlencoded");
		http.setRequestHeader("ENCTYPE", "plain/text");
		http.send(url);
	}
}