var Tooltip = {
    followMouse: true,
    offX: 8,
    offY: 12,
    tipID: "ToolTip",
    showDelay: 100,
    hideDelay: 200,
ready:false,timer:null,tip:null,init:function()
{
	if(document.createElement&&document.body&&typeof document.body.appendChild!="undefined")
	{
		if(!document.getElementById(this.tipID))
		{
			var el=document.createElement("DIV");
			el.id=this.tipID;document.body.appendChild(el);
		}
		this.ready=true;
	}
},show:function(e,msg)
{
	if(this.timer)
	{
		clearTimeout(this.timer);
		this.timer=0;
	}
	this.tip=document.getElementById(this.tipID);
	if(this.followMouse)
		dw_event.add(document,"mousemove",this.trackMouse,true);
	this.writeTip("");
	this.writeTip(msg);
	viewport.getAll();
	this.positionTip(e);
	this.timer=setTimeout("Tooltip.toggleVis('"+this.tipID+"', 'visible')",this.showDelay);
},writeTip:function(msg)
{
	if(this.tip&&typeof this.tip.innerHTML!="undefined")this.tip.innerHTML=msg;
},positionTip:function(e)
{
	if(this.tip&&this.tip.style)
	{
		var x=e.pageX?e.pageX:e.clientX+viewport.scrollX;
		var y=e.pageY?e.pageY:e.clientY+viewport.scrollY;
		if(x+this.tip.offsetWidth+this.offX>viewport.width+viewport.scrollX)
		{
			x=x-this.tip.offsetWidth-this.offX;
			if(x<0)
				x=0;
		}
		else
			x=x+this.offX;
		if(y+this.tip.offsetHeight+this.offY>viewport.height+viewport.scrollY)
		{
			y=y-this.tip.offsetHeight-this.offY;
			if(y<viewport.scrollY)
				y=viewport.height+viewport.scrollY-this.tip.offsetHeight;
		}
		else
			y=y+this.offY;
		this.tip.style.left=x+"px";
		this.tip.style.top=y+"px";
	}
},hide:function()
{
	if(this.timer)
	{
		clearTimeout(this.timer);
		this.timer=0;
	}
	this.timer=setTimeout("Tooltip.toggleVis('"+this.tipID+"', 'hidden')",this.hideDelay);
	if(this.followMouse)
		dw_event.remove(document,"mousemove",this.trackMouse,true);
		this.tip=null;
},toggleVis:function(id,vis)
{
	var el=document.getElementById(id);
	if(el)
		el.style.visibility=vis;
},trackMouse:function(e)
{
	e=dw_event.DOMit(e);
	Tooltip.positionTip(e);
}
};