function upload_user_video(nextUrl){	
	var parametersPOST = "";
	
	parametersPOST += '&title=' + encodeURIComponent($F('title'));
	parametersPOST += '&description=' + encodeURIComponent($F('description'));
	parametersPOST += '&category=' + encodeURIComponent($F('category'));
	parametersPOST += '&tags=' + encodeURIComponent($F('tags'));
	parametersPOST += '&video=' + encodeURIComponent($F('file'));
	parametersPOST += '&uid=' + encodeURIComponent($F('uid'));
	
	var url = 'engines/user_videos/lib/ajax.upload.user.video.lib.php';
	var peticion = new Ajax.Request(url, 
	{
		method:'post',
		postBody: parametersPOST,
		onSuccess: 
			function(respuesta) {
			  var datos 	= respuesta.responseXML;		  
			  var MsgStr	= datos.getElementsByTagName("MsgStr")[0].childNodes[0].data; 
			  var token		= datos.getElementsByTagName("token")[0].childNodes[0].data; 
			  var url		= datos.getElementsByTagName("url")[0].childNodes[0].data; 
			
			  if(MsgStr==1){
					$('form_uploa_user_video').action = url + '?nexturl=' + nextUrl;  
					$('token').value = token;
					$('form_uploa_user_video').submit();
			  }else{
				  alert(MsgStr);
				  //$('div_MsgStr').innerHTML = MsgStr;
			  }
	
			}, 
		onFailure: function() { alert('Se ha producido un error'); }
	});
	
	return false;

}