document.write('<html xmlns="http://www.w3.org/1999/xhtml"><head><style type="text/css">		#chan_items {		  margin: 10px; 		  font-family: Tahoma;	  	  font-size: 12px;	  	  text-decoration: none;	  	  border: thin solid rgb(64, 150, 238);	  	  padding: 4px; color: rgb(102, 102, 102);	  	  background-color: rgb(255, 255, 255);	  	  width: 645px;	  	  text-align: left;							  	  }		#chan_items #item { margin-bottom: 10px;  }		#chan_items #item #item_title { font-weight: bold;		 padding: 2px 0px 2px 8px;		 text-indent: -8px;		 font-family: Arial,Helvetica,sans-serif;		 font-style: normal; font-variant: normal;		 font-weight: normal;		 font-size: 12px;		 line-height:normal;		 font-size-adjust: none;		 font-stretch: normal;		 -x-system-font: none;		 }</style></head>');

document.write('<body onload="collapseAll()">');

document.write('<form name="rssform" ><table width="100%"><tbody><tr> <a href="rss"><img src="images/rss.jpg" width="24"/></a></tr><tr><td align="center"><label><b>Noticias sobre: </b></label><select name="rssurl" onchange="getRSS(); return false;">');
document.write('<option value="rss/not/esculcerami.xml">Esculturas Cer&#225;mica</option>');
document.write('<option value="rss/not/expoescul.xml">Exposiciones de Esculturas</option>');
document.write('<option value="rss/not/expocart.xml">Exposiciones en Cartagena</option>');
document.write('<option value="rss/not/artesania.xml">Artesan&#237;a</option>');
document.write('<option value="rss/rsswebdismun.xml">&#218;ltimas novedades de esta Web.</option>');

document.write('</select></td><td align="center"><label><b>Modo: </b></label><select name="rssmodo" onchange="getRSS(); return false;"><option value="Extendido">Extendido</option><option value="Compacto">Compacto</option></select></td></tr></tbody></table></form>')

document.write('<div id="chan" class="rss"><div id="chan_title"></div><div id="chan_description"></div><a id="chan_image_link"></a><div id="chan_items"></div><div id="chan_pubDate"></div><div id="chan_copyright"></div></div>');
document.write('</body></html>');

//OBJECTS

function collapseAll()
{
getRSS();
return false;
}

//objects inside the RSS2Item object
function RSS2Enclosure(encElement)
{
	if (encElement == null)
	{
		this.url = null;
		this.length = null;
		this.type = null;
	}
	else
	{
		this.url = encElement.getAttribute("url");
		this.length = encElement.getAttribute("length");
		this.type = encElement.getAttribute("type");
	}
}

function RSS2Guid(guidElement)
{
	if (guidElement == null)
	{
		this.isPermaLink = null;
		this.value = null;
	}
	else
	{
		this.isPermaLink = guidElement.getAttribute("isPermaLink");
		this.value = guidElement.childNodes[0].nodeValue;
	}
}

function RSS2Source(souElement)
{
	if (souElement == null)
	{
		this.url = null;
		this.value = null;
	}
	else
	{
		this.url = souElement.getAttribute("url");
		this.value = souElement.childNodes[0].nodeValue;
	}
}

//object containing the RSS 2.0 item
function RSS2Item(itemxml)
{
	//required
	this.title;
	this.link;
	this.description;

	//optional vars
	this.author;
	this.comments;
	this.pubDate;

	//optional objects
	this.category;
	this.enclosure;
	this.guid;
	this.source;

	var properties = new Array("title", "link", "description", "author", "comments", "pubDate");
	var tmpElement = null;
	for (var i=0; i<properties.length; i++)
	{
		tmpElement = itemxml.getElementsByTagName(properties[i])[0];
		if (tmpElement != null)
			eval("this."+properties[i]+"=tmpElement.childNodes[0].nodeValue");
	}

	this.category = new RSS2Category(itemxml.getElementsByTagName("category")[0]);
	this.enclosure = new RSS2Enclosure(itemxml.getElementsByTagName("enclosure")[0]);
	this.guid = new RSS2Guid(itemxml.getElementsByTagName("guid")[0]);
	this.source = new RSS2Source(itemxml.getElementsByTagName("source")[0]);
}

//objects inside the RSS2Channel object
function RSS2Category(catElement)
{
	if (catElement == null)
	{
		this.domain = null;
		this.value = null;
	}
	else
	{
		this.domain = catElement.getAttribute("domain");
		this.value = catElement.childNodes[0].nodeValue;
	}
}

//object containing RSS image tag info
function RSS2Image(imgElement)
{
	if (imgElement == null)
	{
	this.url = null;
	this.link = null;
	this.width = null;
	this.height = null;
	this.description = null;
	}
	else
	{
		imgAttribs = new Array("url","title","link","width","height","description");
		for (var i=0; i<imgAttribs.length; i++)
			if (imgElement.getAttribute(imgAttribs[i]) != null)
				eval("this."+imgAttribs[i]+"=imgElement.getAttribute("+imgAttribs[i]+")");
	}
}

//object containing the parsed RSS 2.0 channel
function RSS2Channel(rssxml)
{
	//required
	this.title;
	this.link;
	this.description;

	//array of RSS2Item objects
	this.items = new Array();

	//optional vars
	this.language;
	this.copyright;
	this.managingEditor;
	this.webMaster;
	this.pubDate;
	this.lastBuildDate;
	this.generator;
	this.docs;
	this.ttl;
	this.rating;

	//optional objects
	this.category;
	this.image;

	var chanElement = rssxml.getElementsByTagName("channel")[0];
	var itemElements = rssxml.getElementsByTagName("item");

	for (var i=0; i<itemElements.length; i++)
	{
		Item = new RSS2Item(itemElements[i]);
		this.items.push(Item);
		//chanElement.removeChild(itemElements[i]);
	}

	var properties = new Array("title", "link", "description", "language", "copyright", "managingEditor", "webMaster", "pubDate", "lastBuildDate", "generator", "docs", "ttl", "rating");
	var tmpElement = null;
	for (var i=0; i<properties.length; i++)
	{
		tmpElement = chanElement.getElementsByTagName(properties[i])[0];
		if (tmpElement!= null)
			eval("this."+properties[i]+"=tmpElement.childNodes[0].nodeValue");
	}

	this.category = new RSS2Category(chanElement.getElementsByTagName("category")[0]);
	this.image = new RSS2Image(chanElement.getElementsByTagName("image")[0]);
}

//PROCESSES

//uses xmlhttpreq to get the raw rss xml
function getRSS()
{
	//call the right constructor for the browser being used
	if (window.ActiveXObject) {
		xhr = new ActiveXObject("Microsoft.XMLHTTP");
		
	}
	else if (window.XMLHttpRequest) {
		xhr = new XMLHttpRequest();
		
	}
	else
		alert("not supported");

	//prepare the xmlhttprequest object
	
	var modo= document.rssform.rssmodo.value;
	
	xhr.open("GET",document.rssform.rssurl.value,true);
 	
	xhr.setRequestHeader("Cache-Control", "no-cache");
	
	xhr.setRequestHeader("Pragma", "no-cache");
	
	
	
	xhr.onreadystatechange = function() {
		if (xhr.readyState == 4)
		{
			if (xhr.status == 200)
			{
				if (xhr.responseText != null)
					processRSS(xhr.responseXML,modo);
				else
				{
					alert("Failed to receive RSS file from the server - file not found.");
					return false;
				}
			}
			else
				alert("Error code " + xhr.status + " received: " + xhr.statusText);
		}
	}
	
	//send the request
	
	xhr.send(null);
}

//processes the received rss xml
function processRSS(rssxml,modo)
{
	RSS = new RSS2Channel(rssxml);
	showRSS(RSS,modo);
}

//shows the RSS content in the browser
function showRSS(RSS,modo)
{
	//default values for html tags used
	var imageTag = "<img id='chan_image'";
	var startItemTag = "<div id='item'>";
	var startTitle = "<div id='item_title'>";
	var startLink = "<div id='item_link'>";
	var startDescription = "<div id='item_description'>";
	var endTag = "</div>";

	//populate channel data
     //   var properties = new Array("title","link","description","pubDate","copyright");
//	for (var i=0; i<properties.length; i++)
	//{
	//	eval("document.getElementById('chan_"+properties[i]+"').innerHTML = ''");
	//	curProp = eval("RSS."+properties[i]);
	//	if (curProp != null)
	//		eval("document.getElementById('chan_"+properties[i]+"').innerHTML = curProp");
	//}

	//show the image
	document.getElementById("chan_image_link").innerHTML = "";
	if (RSS.image.src != null)
	{
		document.getElementById("chan_image_link").href = RSS.image.link;
		document.getElementById("chan_image_link").innerHTML = imageTag
			+" alt='"+RSS.image.description
			+"' width='"+RSS.image.width
			+"' height='"+RSS.image.height
			+"' src='"+RSS.image.url
			+"' "+"/>";
	}

	//populate the items
	document.getElementById("chan_items").innerHTML = "";
	for (var i=0; i<RSS.items.length; i++)
	{
		item_html = startItemTag;
		 item_html += (RSS.items[i].title == null) ? "" : startTitle +'<a href="'+RSS.items[i].link+'" target="_blank">'+RSS.items[i].title + '</a>'+endTag;
		// item_html += (RSS.items[i].link == null) ? "" : startLink + RSS.items[i].link + endTag;
		 if (modo == "Extendido") {
 			 item_html += (RSS.items[i].description == null) ? "" : startDescription + RSS.items[i].description + endTag;
		 }
		item_html += endTag;
		document.getElementById("chan_items").innerHTML += item_html;
	}

	//we're done
	//document.getElementById("chan").style.visibility = "visible";
	return true;
}

var xhr;
