function newImage(arg) {
	if (document.images) {
		rslt = new Image();
		rslt.src = arg;
		return rslt;
	}
}

function changeImages() {
	if (document.images && (preloadFlag == true)) {
		for (var i=0; i<changeImages.arguments.length; i+=2) {
			document[changeImages.arguments[i]].src = changeImages.arguments[i+1];
		}
	}
}

var preloadFlag = false;
function preloadImages() {
	if (document.images) {
		inicio_over = newImage("images/inicio-over.gif");
		vehiculos_over = newImage("images/vehiculos-over.gif");
		Servicios_al_cliente_over = newImage("images/Servicios-al-cliente-over.gif");
		empresa_over = newImage("images/empresa-over.gif");
		oficinas_over = newImage("images/oficinas-over.gif");
		tarifas_over = newImage("images/tarifas-over.gif");
		preloadFlag = true;
	}
}

function NewsScrollStart(){
marqueeheight=document.all? parent.document.all.NewsWindow.height : parent.document.getElementById("NewsWindow").getAttribute("height")
dataobj=document.all? document.all.NewsDiv : document.getElementById("NewsDiv")
dataobj.style.top=topspace
AreaHeight=dataobj.offsetHeight
setTimeout("ScrollNewsDiv()",( startdelay * 1000 ))
}

function ScrollNewsDiv(){
dataobj.style.top=parseInt(dataobj.style.top)-(scrollspeed)
if (parseInt(dataobj.style.top)<AreaHeight*(-1)) {
dataobj.style.top=frameheight
setTimeout("ScrollNewsDiv()",( nextdelay * 1000 ))
}
else {
setTimeout("ScrollNewsDiv()",30)
}

}

function toggleLayer( whichLayer ){
	var elem, vis;  
	if( document.getElementById ) // this is the way the standards work
		elem = document.getElementById( whichLayer );  
	else if( document.all ) // this is the way old msie versions work      
		elem = document.all[whichLayer];  
		else if( document.layers ) // this is the way nn4 works    
			elem = document.layers[whichLayer];  
			vis = elem.style;  // if the style.display value is blank we try to figure it out here  
	if(vis.display==''&&elem.offsetWidth!=undefined&&elem.offsetHeight!=undefined)    
		vis.display = (elem.offsetWidth!=0&&elem.offsetHeight!=0)?'block':'none';  
		vis.display = (vis.display==''||vis.display=='block')?'none':'block';
	}