var objLayerActivo = '';
var desplegado = false;
var mytimeout = null;

function mostrarMenu(strMenuName) {

	desplegado = true;

	if (mytimeout != null){

		clearTimeout(mytimeout);
	}
	
	for (i=0; i<arrLayerNames.length; i++) {
		if (strMenuName != objLayerActivo) {
			document.getElementById(arrLayerNames[i]).style.display = 'none';
		}
	}
	
	objLayerActivo = strMenuName;
	document.getElementById(strMenuName).style.display = 'block';
	
}

function ocultarMenu(strMenuName){
		document.getElementById(strMenuName).style.display = 'none';
		objLayerActivo = '';
}

function cerrar_layout(strMenuName){

		mytimeout=setTimeout("ocultarMenu('"+strMenuName+"')",200);

}

function borrarTimeout(timeout){

	if (timeout != null){
	
		clearTimeout(timeout);
	}

}


function mOvr(src,clrOver,id) {
/*
	if (!src.contains(event.fromElement)) {
		src.bgColor = clrOver;
	}
*/
	
	if (id != '') {
	   src.background="media/fondoDesplegableOn.gif"
	   /*document.getElementById(id).className = 'menu_div_sobre';*/

	   }
}

function mOut(src,clrIn,id) {
/*
	if (!src.contains(event.toElement)) {

	}
*/	

	if (id != ''){
	   src.background="media/fondoDesplegableOff.gif"
	   /*document.getElementById(id).className = 'menu_div';*/
	}  
}


function preCargaImg(imageURL) {
		image = new Image();
		image.src = imageURL;
		return image;
}

function CambiarImg(buttonName,sourceImage) {
		document [buttonName].src = sourceImage.src;
		return true;
}