var intIntervalID = null;
var intPosX = 0;
var intStepX = 10;
var intMaxScroll = 0;
var strLayerID = "";

var blnVisible = false;

function showHideLayer(strLayerID){
	var refLayer = document.getElementById(strLayerID);
	intPosX = 0;
	if(blnVisible == false){
		refLayer.style.visibility = "visible";
		init('ts',430);
		blnVisible = true;
	}
	else if(blnVisible == true){
		refLayer.style.visibility = "hidden";
		refLayer.style.height = intPosX;
		blnVisible = false;
		window.clearInterval(intIntervalID);
		intIntervalID = null;
		intPosX = 0;
		intStepX = 10;
		intMaxScroll = 0;
		strLayerID = "";		
	}
}

function hideLayer(strLayerID){
	var refLayer = document.getElementById(strLayerID);
	refLayer.style.visibility = "hidden";
}

function init(strLayer,intMaxScrollPos){
	intIntervalID = window.setInterval("scroll()",15);
	intMaxScroll = intMaxScrollPos;
	strLayerID = strLayer;
}


function scroll(){
	var refLayer = document.getElementById(strLayerID);
	intPosX += intStepX;
	
	intStepX-=0.12;
	if(intStepX<1){
		intStepX = 1;
	}
	refLayer.style.height=intPosX;
	
	if(intPosX > intMaxScroll){
		window.clearInterval(intIntervalID);
	}
	
}