function fadeIn(){
	document.getElementById('overlay').style.display = "block";
	opacity('hoveradd', 0, 100, 800);
}

function fadeOut(){
	opacity('hoveradd', 100, 0, 800);
	document.getElementById('overlay').style.display = "none";
}

function hoveradd(){
	document.getElementById('overlay').style.display = "inline";
	opacity('standorthover', 0, 100, 800);
}

function closehoveradd(){
	opacity('standorthover', 100, 0, 800);
	document.getElementById('overlay').style.display = "none";
}

function opacity(id, opacStart, opacEnd, millisec) {
	document.getElementById(id).style.display = "inline";
    var speed = Math.round(millisec / 100);
    var timer = 0;

    if(opacStart > opacEnd) {
        for(i = opacStart; i >= opacEnd; i--) {
            setTimeout("changeOpac(" + i + ",'" + id + "')",(timer * speed));
            timer++;
        }
		document.getElementById(id).style.display = "none";
    } else if(opacStart < opacEnd) {
			changeOpac(0,id);
	        for(i = opacStart; i <= opacEnd; i++)
            {
            setTimeout("changeOpac(" + i + ",'" + id + "')",(timer * speed));
            timer++;
        }
    }
}

function changeOpac(opacity, id) {
    var object = document.getElementById(id).style;
    object.opacity = (opacity / 100);
    object.MozOpacity = (opacity / 100);
    object.KhtmlOpacity = (opacity / 100);
    object.filter = "alpha(opacity=" + opacity + ")";
}