var divV = 0;
var divFactor = 10;

function desparecerDiv(elemD){
	if(divV>0){
		divV = divV - divFactor;
		window.document.getElementById(elemD).style.filter = "alpha(opacity: " + divV + ")";
		window.document.getElementById(elemD).style.MozOpacity=divV/100.0;
		timerID=setTimeout("desparecerDiv('"+elemD+"')",250);
	}
	else{
		divV=0;
	}
}

function aparecerDiv(elemD){
	if(divV>=70){
		divV=70;
		timerID=setTimeout("desparecerDiv('"+elemD+"')",1500);
	}
	else{
		divV=divV+divFactor;
		window.document.getElementById(elemD).style.filter = "alpha(opacity: " + divV + ")";
		window.document.getElementById(elemD).style.MozOpacity=divV/100.0;
		timerID=setTimeout("aparecerDiv('"+elemD+"')",250);
	}
}

function iniciarDiv(elemD){
	window.document.getElementById(elemD).style.filter = "alpha(opacity: " + divV + ")";
	window.document.getElementById(elemD).style.MozOpacity=divV/100.0;
	xShow(elemD);
	timerID=setTimeout("aparecerDiv('"+elemD+"')",250);
}