var active_page;

 

	function SwapInclude(include_file, div_id, active_btn)
	{ 
		active_page = active_btn;
		if(active_page == 'home_btn')
		{
		document.getElementById('home_btn').style.color = '#ff0000';
		document.getElementById('audio_btn').style.color = '#333333';
		document.getElementById('video_btn').style.color = '#333333';
		document.getElementById('gallery_btn').style.color = '#333333';
		document.getElementById('contact_btn').style.color = '#333333';
		}
		if(active_page == 'audio_btn')
		{
		document.getElementById('home_btn').style.color = '#333333';
		document.getElementById('audio_btn').style.color = '#ff0000';
		document.getElementById('video_btn').style.color = '#333333';
		document.getElementById('gallery_btn').style.color = '#333333';
		document.getElementById('contact_btn').style.color = '#333333';
		}
		if(active_page == 'video_btn')
		{
		document.getElementById('home_btn').style.color = '#333333';
		document.getElementById('audio_btn').style.color = '#333333';
		document.getElementById('video_btn').style.color = '#ff0000';
		document.getElementById('gallery_btn').style.color = '#333333';
		document.getElementById('contact_btn').style.color = '#333333';
		}
		if(active_page == 'gallery_btn')
		{
		document.getElementById('home_btn').style.color = '#333333';
		document.getElementById('audio_btn').style.color = '#333333';
		document.getElementById('video_btn').style.color = '#333333';
		document.getElementById('gallery_btn').style.color = '#ff0000';
		document.getElementById('contact_btn').style.color = '#333333';
		}
		if(active_page == 'contact_btn')
		{
		document.getElementById('home_btn').style.color = '#333333';
		document.getElementById('audio_btn').style.color = '#333333';
		document.getElementById('video_btn').style.color = '#333333';
		document.getElementById('gallery_btn').style.color = '#333333';
		document.getElementById('contact_btn').style.color = '#ff0000';
		}
		
		//alert(active_page);
		var req = null; 
		document.getElementById(div_id).innerHTML="Started...";
 
		if (window.XMLHttpRequest)
		{req = new XMLHttpRequest();} 
		else if (window.ActiveXObject) 
		{
			try {req = new ActiveXObject("Msxml2.XMLHTTP");} 
			catch (e)
			{try {req = new ActiveXObject("Microsoft.XMLHTTP");} catch (e) {}}
        }
		req.onreadystatechange = function()
		{ 
			document.getElementById(div_id).innerHTML="Wait server...";
			if(req.readyState == 4)
			{
				if(req.status == 200)
				{
					//document.ajax.dyn.value="Received:" + req.responseText;	
					document.getElementById(div_id).innerHTML = req.responseText;
				}	
				else	
				{document.getElementById(div_id).innerHTML = "Error: returned status code " + req.status + " " + req.statusText;}	
			} 
		}; 
		req.open("GET", include_file, true); 
		req.send(null);
	}