function showDiv(divId) {
	if (document.getElementById && document.getElementById(divId) != null) {
		document.getElementById(divId).style.visibility='visible';
		document.getElementById(divId).style.display='block';
	}
}

function hideDiv(divId) {
	if (document.getElementById && document.getElementById(divId) != null) {
		document.getElementById(divId).style.visibility='hidden';
		document.getElementById(divId).style.display='none';
	}
}

/*function fadeOut(opacity, step) {
	 minOpacity = 50;
	 if (opacity >= minOpacity) {
	    document.body.style.opacity = opacity/100;
	    opacity += step;
	    window.setTimeout("fadeOut("+opacity+","+step+")", 0);
	 }
}

function fadeIn(opacity, step) {
	 maxOpacity = 100;
	 if (opacity <= maxOpacity) {
	    document.body.style.opacity = opacity/100;
	    opacity += step;
	    window.setTimeout("fadeIn("+opacity+","+step+")", 0);
	 }
}

function fadeOutfadeIn(opacity, step) {
	 minOpacity = 50;
	 maxOpacity = 100;
	 if (opacity >= minOpacity && opacity <= maxOpacity) {
	    document.body.style.opacity = opacity/100;
	    opacity += step;
	    if (opacity == minOpacity) step = step * -1;
	    window.setTimeout("fadeOutfadeIn("+opacity+","+step+")", 0);
	 }
}*/