function attachEventListener(target, eventType, functionRef, capture) {
    if (typeof target.addEventListener != "undefined") {
        target.addEventListener(eventType, functionRef, capture);
    } else if (typeof target.attachEvent != "undefined") {
        target.attachEvent("on" + eventType, functionRef);
    } else {
        return false;
    }
    return true;
}

function target_blank() {
	if (!document.getElementsByTagName) return;
	var anchors = document.getElementsByTagName("a");
	var i, enlace;
	for (i = 0; i < anchors.length; i++) {
		if (anchors[i].getAttribute("href") && anchors[i].getAttribute("rel") == "external") anchors[i].target = "_blank";
	}
}

function reset_form() {
	if (!document.getElementsByTagName) {
		return;
	}

	var los_inputs = document.getElementsByTagName("input");
	var los_textareas = document.getElementsByTagName("textarea");
	var i;
	for (i = 0; i < los_inputs.length; i++) {
		if (los_inputs[i].getAttribute("type").toLowerCase() == "text" || los_inputs[i].getAttribute("type").toLowerCase() == "password") {
			los_inputs[i].onfocus = function() {
				if ((this.value.charCodeAt(0) == 32 || this.value.charCodeAt(0) == 160) && this.value.length == 1) this.value = "";
			};
		}
	}	
	for (i = 0; i < los_textareas.length; i++) {
		los_textareas[i].onfocus = function() {
			if (this.value.charCodeAt(0) == 32 || this.value.charCodeAt(0) == 160 && this.value.length == 1) this.value = "";
		};
	}
}
function items(id){
	if (document.getElementById('enlace_1')) {
		document.getElementById('enlace_1').style.color = "#ffffff";
	}
	if (document.getElementById('enlace_2')) {
		document.getElementById('enlace_2').style.color = "#ffffff";
	}
	if (document.getElementById('enlace_3')) {
		document.getElementById('enlace_3').style.color = "#ffffff";
	}
	if (document.getElementById('enlace_4')) {
		document.getElementById('enlace_4').style.color = "#ffffff";
	}
	if (document.getElementById('enlace_5')) {
		document.getElementById('enlace_5').style.color = "#ffffff";
	}
	if (document.getElementById('enlace_6')) {
		document.getElementById('enlace_6').style.color = "#ffffff";
	}
	document.getElementById('enlace_' + id).style.color = "#D4A000";
	document.getElementById('enlace_' + id).blur();

	if (document.getElementById('pestana_1')) {
			document.getElementById('pestana_1').style.backgroundImage="url(../images/pestana1_01.gif)";
	}
	if (document.getElementById('pestana_2')) {
			document.getElementById('pestana_2').style.backgroundImage="url(../images/pestana1_01.gif)";
	}
	if (document.getElementById('pestana_3')) {
			document.getElementById('pestana_3').style.backgroundImage="url(../images/pestana3_01.gif)";
	}
	if (document.getElementById('pestana_4')) {
			document.getElementById('pestana_4').style.backgroundImage="url(../images/pestana4_01.gif)";
	}
	if (document.getElementById('pestana_5')) {
			document.getElementById('pestana_5').style.backgroundImage="url(../images/pestana4_01.gif)";
	}
	if (document.getElementById('pestana_6')) {
			document.getElementById('pestana_6').style.backgroundImage="url(../images/pestana5_01.gif)";
	}


	var pest = document.getElementById('pestana_' + id);
	if ((id==1) || (id==2)) {
		pest.style.backgroundImage="url(../images/pestana1_02.gif)";
	}
	if (id==3) {
		pest.style.backgroundImage="url(../images/pestana3_02.gif)";
	}
	if ((id == 4) ||(id==5)) {
		pest.style.backgroundImage="url(../images/pestana4_02.gif)";
	}
	if(id == 6){
		pest.style.backgroundImage="url(../images/pestana5_02.gif)";
	}

	document.getElementById('enlace_' + id).style.textDecoration = "none";

	var obj = document.getElementById('item_' + id);
	listado = document.getElementById('cuadro_interior');

	
	
	if (listado) {
		contenedores = listado.getElementsByTagName('div');
		numContenedores = contenedores.length;
		listado.style.display='block';
		
		for (m = 0; m < numContenedores; m++) {
			if (contenedores[m].id.indexOf('item_') == 0) contenedores[m].style.display = 'none';
		}
		
	}
	if (obj) {
		if (obj.style.display == 'block') {
			obj.style.display = 'none';
		} else {
			obj.style.display = 'block';
		}
	}
}



/*function ocultaItems(){
	listado = document.getElementById('item_' + id);
	
	if (listado) {
		contenedores = listado.getElementsByTagName('div');
		numContenedores = contenedores.length;
		for (m=1; m < numContenedores; m++) {
			if(contenedores[m].id.indexOf('item_') == 1) contenedores[m].style.display = 'none';
		}
	}
}
attachEventListener(window, "load", ocultaItems, false);*/
attachEventListener(window, "load", target_blank, false);
attachEventListener(window, "load", reset_form, false);