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++;
		}
	} else if(opacStart < opacEnd) {
		for(i = opacStart; i <= opacEnd; i++)
			{
			setTimeout("changeOpac(" + i + ",'" + id + "')",(timer * speed));
			timer++;
		}
	}
}

//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 showVistaDiv(id, targetid, realtiveX, relativeY)
	{
	
	
		var divId = document.getElementById(id);
		var elem = document.getElementById(targetid);
		var object = document.getElementById(id).style; 
		object.opacity = 0.1;
		object.MozOpacity = 0.1;
		object.KhtmlOpacity = 0.1;
		object.filter = "alpha(opacity=" + 10 + ")";
		
		if(divId.style.display == 'none')
		{
			
			var offsets = Position.cumulativeOffset(elem);
			
			divId.style.top = (offsets[1] + relativeY)+"px";
			divId.style.left = (offsets[0] - realtiveX)+"px";
			//shiftOpacity('regDiv', 1000);
			//opacity('scheduleForm', 0, 100, 1000);
			divId.style.display = "block";
			opacity(id, 0, 100, 1000);
		}
		
	
	}
	
	function hideVistaDiv(id)
	{
		var divId = document.getElementById(id);
		if(divId.style.display == 'block')
		{
			//
			opacity(id, 100, 10, 300);
			divId.style.display = 'none'
			//opacity('scheduleForm', 10, 100, 1000);
		}
	}