var tmeTime;

function opacity(id, opacStart, opacEnd, millisec)
{
	//speed for each frame
	var speed = Math.round(millisec / 100);
	var timer = 0;

	//determine the direction for the blending, if start and end are the same nothing happens
	if(opacStart > opacEnd) {
		for(i = opacStart; i >= opacEnd; i--)
		{
			setTimeout("changeOpac(" + i + ",'" + id + "')",(timer * speed));
			timer++;
			if(i == 0)
				tmeTime = setTimeout('Disappear()',1000);
		}
	} else if(opacStart < opacEnd) {
		for(i = opacStart; i <= opacEnd; i++)
		{
			setTimeout("changeOpac(" + i + ",'" + id + "')",(timer * speed));
			timer++;
			if(i == 101)
				tmeTime = setTimeout('AjaxMain(0)',500);
		}
	}
	
}

//change the opacity for different browsers
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 + ")";
} 

function ShowPanel()
{
	document.getElementById('divPageOverlap').style.visibility = "visible";
	document.getElementById('divUpperOverlap').style.visibility = "visible";
	document.getElementById('divFeatContent').innerHTML = "";
	document.getElementById('divFeatDetail').style.opacity = 0;
	opacity('divFeatDetail',1,101,500);
}

function HidePanel()
{
	opacity('divFeatDetail',100,0,500);
}

function Disappear()
{
	document.getElementById('divPageOverlap').style.visibility = "hidden";
	document.getElementById('divUpperOverlap').style.visibility = "hidden";
	clearTimeout(tmeTime);
}