var num_img=2;
var lenguage;

function cambiar_header() {
	num_img = ((num_img + 1) % 2);
	
	if(lenguage == 'ingles'){
		if(num_img == 0){
			//document.getElementById('titles').innerHTML = '<h1>Science and Technology Faculty</h1><br><h3>is an Equal Opportunity Employer/Educator!!!</h3>';
			document.getElementById('titles').innerHTML = '<h1>Is an Equal Opportunity Employer/Educator!!!</h1>';
		}else{
			document.getElementById('titles').innerHTML = '<h1>Science and Technology Faculty</h1><br><h3>NATIONAL UNIVERSITY OF ITAPUA</h3>';
		}
	}
	else{
		
		if(num_img == 0){
			//document.getElementById('titles').innerHTML = '<h1>Facultad de Ciencias y Tecnología</h1><br><h3>es igual a oportunidad laboral/educacional!!!</h3>';
			document.getElementById('titles').innerHTML = '<h1>Facultad de Ciencias y Tecnología</h1><br><h3>UNIVERSIDAD NACIONAL DE ITAPUA</h3>';
		}else{
			document.getElementById('titles').innerHTML = '<h1>Facultad de Ciencias y Tecnología</h1><br><h3>UNIVERSIDAD NACIONAL DE ITAPUA</h3>';
		}
	}
}

setInterval("cambiar_header()",5000);

function switch_lenguage(idioma){
	lenguage = idioma;
	if(idioma == 'castellano'){
		document.getElementById('titles').innerHTML = '<h1>Facultad de Ciencias y Tecnología</h1><br><h3>UNIVERSIDAD NACIONAL DE ITAPUA</h3>';
		
		document.getElementById('nav_ingles').style.visibility = 'hidden';
		document.getElementById('nav_castellano').style.visibility = 'visible';
		
		
		document.getElementById('nav_ingles').style.position = 'absolute';
		document.getElementById('nav_castellano').style.position = 'relative';
		
		
		
		get_article('articles', 'articles/news/index_es.php');
		
	}else if(idioma == 'ingles'){
		document.getElementById('titles').innerHTML = '<h1>Science and Technology Faculty</h1><br><h3>NATIONAL UNIVERSITY OF ITAPUA</h3>';
		
		document.getElementById('nav_castellano').style.visibility = 'hidden';
		document.getElementById('nav_ingles').style.visibility = 'visible';
		
		document.getElementById('nav_castellano').style.position = 'absolute';
		document.getElementById('nav_ingles').style.position = 'relative';

		get_article('articles', 'articles/news/index_en.php');
	}
}

function get_article(object, url ){
	window.scrollTo(0,0);
	document.getElementById(object).innerHTML = "<div style='width:100%; text-align:center;'><img src='images/load.gif'></div>";
	object = make_xmlhttp(object);
	object.open('GET', url, true);
	object.send();	
	//alert(url);
}