//this switches expand collapse icons
function filter(imagename,objectsrc){
	if (document.images){
		if (document.images[imagename] != null)
		{
			document.images[imagename].src=eval(objectsrc+".src");
			}
	}
}

function toggle(id) {
	if (document.getElementById) { // DOM3 = IE5, NS6	
		// document element exists check
		if (document.getElementById(id)!= null)
			if (document.getElementById(id).style.display == "none" || document.getElementById(id).style.display == ""){
				document.getElementById(id).style.display = 'block';
			} else {
				document.getElementById(id).style.display = 'none';			
			}	
	} else {
		if (document.layers) {
			// document layer exists check
			if (document.id != null)
				if (document.id.display == "none" || document.id.display == "") {
					document.id.display = 'block';
				} else {
					document.id.display = 'none';
				}
		} else {
			// document layer exists check
			if (document.all.id != null)
				if (document.all.id.style.visibility == "none" || document.all.id.style.visibility == ""){
					document.all.id.style.display = 'block';				
				} else {
					document.all.id.style.display = 'none';
				}
		}		
	}		
				
//	var cvelement = document.getElementById(id);
//	if(cvelement.style.display == "none"){
//		cvelement.style.display = "block";
//	} else {
//		cvelement.style.display = "none";
//	}
}

function changebanner(){
	var futuro = new Date (2009,4,13,22,00);
	var ahora = new Date();
	var faltan = futuro - ahora;
	NumDias = (futuro.getTime()/86400000)-(ahora.getTime()/86400000);
	if (faltan > 0){
		var segundos = Math.round(faltan/1000);
		var minutos = Math.floor(segundos/60);
		var segundos_s = segundos%60;
		var horas = Math.floor(minutos/60);
		var minutos_s = minutos%60;
		var dias = Math.floor(horas/24);
		var horas_s = horas%24;
		if(horas_s%2==1){
			document.getElementById("wwe").innerHTML="";
			document.getElementById("cv").style.display="block";
		} else {
			document.getElementById("cv").innerHTML="";
			document.getElementById("wwe").style.display="block";
		}
	} else {
		document.getElementById("wwe").innerHTML="";
		document.getElementById("cv").style.display="block";
	}
}

function changeintervalbanner(start){
	if(start!=1){
		if(document.getElementById("bnr_met").style.display=="block"){
			document.getElementById("bnr_met").style.display="none";
			document.getElementById("bnr_wwe").style.display="block";
		} else {
			document.getElementById("bnr_met").style.display="block";
			document.getElementById("bnr_wwe").style.display="none";
		}
	} else {
		setInterval("changeintervalbanner(0)",10000);
	}
}