/*************************************************************************
dw_tooltip.js   requires: dw_event.js and dw_viewport.js
version date: March 14, 2005
(minor changes in position algorithm and timer mechanism)

This code is from Dynamic Web Coding at dyn-web.com
Copyright 2003-5 by Sharon Paine
See Terms of Use at www.dyn-web.com/bus/terms.html
regarding conditions under which you may use this code.
This notice must be retained in the code as is!
*************************************************************************/

var Tooltip = {
	followMouse: true,
	offX: 8,
	offY: 12,
	tipID: "tipDiv",
	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);
				el.style.visibility="hidden";
				el.style.left="0";
				el.style.top="0";
				el.style.index="10000";
				el.style.position="absolute";
				
				
			}
			this.ready = true;
		}
	},

	show: function(e, msg,styles) {
		if (this.timer) { clearTimeout(this.timer);	this.timer = 0; }
		this.tip = document.getElementById( this.tipID );
		this.tip.className =styles;
		//alert (this.tip.class);
		if (this.followMouse) // set up mousemove
		dw_event.add( document, "mousemove", this.trackMouse, true );
		this.writeTip("");  // for mac ie
		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 ) {
			// put e.pageX/Y first! (for Safari)
			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) // release mousemove
		dw_event.remove( document, "mousemove", this.trackMouse, true );
		this.tip = null;
	},

	toggleVis: function(id, vis) { // to check for el, prevent (rare) errors
		var el = document.getElementById(id);
		if (el) el.style.visibility = vis;
	},

	trackMouse: function(e) {
		e = dw_event.DOMit(e);
		Tooltip.positionTip(e);
	}

}

Tooltip.init();