// set opacity 
function setOpacity(imageObject, opacValue) {
	imageObject.style.opacity = opacValue/100;
	imageObject.style.filter = 'alpha(opacity=' + opacValue + ')';
}

// fade in
function fadeIn() {
	if (p<=100) {
		document.getElementById('column').style.visibility = 'visible'; 
		imageObject = document.getElementById("column");
		opacValue = p;
		imageObject.style.opacity = opacValue/100;
		imageObject.style.filter = 'alpha(opacity=' + opacValue + ')';
		p+=5;
	}
}

// start fade
function startFade() {
	p = 0;
	setInterval("fadeIn()", 50);
}