/* Se calcula la raiz del sitio dinamicamente segun el valor de la direccion
actual */

function calculaRaiz () {
	var indice = location.href.indexOf("drogas/");
	var raiz = "";
	if (indice == -1) {
		alert("Error calculando la raiz del sitio");
	} else {
		raiz = location.href.substring(0, indice);
		//alert("location.href: " + location.href +"\nraiz: "+raiz);
	}
	return raiz;
}

function botonera (guia, anterior, home, indice) {
	var raiz = calculaRaiz();

	var banteriorUrl   = raiz+"drogas/formadores/Img/botones/banterior.png";
	var bhomeUrl       = raiz+"drogas/formadores/Img/botones/bhome.png";
	var bindiceUrl     = raiz+"drogas/formadores/Img/botones/bindice.png";
	var homeUrl        = raiz+"drogas/index.html";
	var familiaUrl     = raiz+"drogas/familia/guia.html";
	var drogasUrl      = raiz+"drogas/drogas/guia.html";
	var ayudaUrl       = raiz+"drogas/ayuda/guia.html";
	var mujeresUrl     = raiz+"drogas/mujeres/guia.html";
	var formadoresUrl  = raiz+"drogas/formadores/guia.html";

	if (anterior) {
		document.write("<a href=\"javascript:history.back()\">");
		document.write("<img src=\"" + banteriorUrl + "\" alt=\"Anterior\" class=\"boton\" onMouseOver=\"high(this)\" onMouseOut=\"low(this)\" /></a>");
	}
	if (home) {
		document.write("<a href=\"" + homeUrl + "\">");
		document.write("<img src=\"" + bhomeUrl + "\" alt=\"P&aacute;gina principal\" class=\"boton\" onMouseOver=\"high(this)\" onMouseOut=\"low(this)\" /></a>");
	}
	if (indice) {
		if (guia == "drogas")
			document.write("<a href=\"" + drogasUrl + "\">");
		else if (guia == "familia")
			document.write("<a href=\"" + familiaUrl + "\">");
		else if (guia == "ayuda")
			document.write("<a href=\"" + ayudaUrl + "\">");
		else if (guia == "mujeres")
			document.write("<a href=\"" + mujeresUrl + "\">");
		else if (guia == "formadores")
			document.write("<a href=\"" + formadoresUrl + "\">");

		document.write("<img src=\"" + bindiceUrl + "\" alt=\"&Iacute;ndice\" class=\"boton\" onMouseOver=\"high(this)\" onMouseOut=\"low(this)\" /></a>");
	}
}