/* AJAX support */

function AJAXCreate() 
{
    var request = false;

	try {
    	request = new ActiveXObject('Msxml2.XMLHTTP');
    }
    catch (err2) 
	{
	    try 
		{
        request = new ActiveXObject('Microsoft.XMLHTTP');
    	}
    	catch (err3) 
		{
			try 
			{
				request = new XMLHttpRequest();
			}
			catch (err1) 
			{
			request = false;
			}
		}
	}
	
	//Fix for content type
	if (request.overrideMimeType) 
	{
		request.overrideMimeType('text/xml');
	}
	
    return request;
}

function AJAXGetXML(url,func, target)
{
	var xhr = AJAXCreate();
	
	if(xhr)
	{
		xhr.onreadystatechange=function()
		{
			if(xhr.readyState == 4)
			{
				func(xhr.responseXML,target);
			}
		};
		
		xhr.open("GET", url, true);
		xhr.send(null);
	}
}

function AJAXPostXML(url,func, target)
{
	var xhr = AJAXCreate();
	
	if(xhr)
	{
		//Fix content type for post
		xhr.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded');
		xhr.onreadystatechange=function()
		{
			if(xhr.readyState == 4)
			{
				func(xhr.responseXML,target);
			}
		};
		
		xhr.open("POST", url, true);
		xhr.send(null);
	}	
}

function AJAXGetText(url,func, target)
{
	var xhr = AJAXCreate();
	
	if(xhr)
	{
		xhr.onreadystatechange=function()
		{
			if(xhr.readyState == 4)
			{
				func(xhr.responseText,target);
			}
		};
		
		xhr.open("GET", url, true);
		xhr.send(null);
	}
}

// User functions

function process(xml,targetID)
{
	var target = document.getElementById(targetID);
	if (xml == null)
	{
		target.innerHTML = "Failed getElementbyId " + targetID;
	}
	else
		target.innerHTML = xml ;
}


function loadfile(url, target)
{ 
	var y = AJAXGetText(url,process,target);
} 

var gallery_dir = 'galeria_files';
var gallery_img = new Array('Galeria1.jpg', 'Galeria2.jpg', 'Galeria3.jpg', 'Galeria4.jpg', 'Galeria5.jpg' );
var gallery_idx = 0;

function loadSlides( url, target) {
	var html = "";
	
	// generate a gallery
	html = "<img src=\"" + gallery_dir +  "/" + gallery_img[0] + "\" onClick=nextSlide() /><br/><br/><br/><br/>";
	gallery_idx++;
	
	process( html, target );
}

function nextSlide() {
	if ( gallery_idx > 4 ) {
		gallery_idx = 0;
	}
	
	var html = "<img src=\"" + gallery_dir +  "/" + gallery_img[gallery_idx] + "\" onClick=nextSlide() /><br/><br/><br/><br/>";
	gallery_idx++;
	
	process( html, 'content' );
}