/*************************************************************************
  dw_tooltip.js   requires: dw_event.js and dw_viewport.js
  version date: May 21, 2005 moved init call to body onload
  (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!
*************************************************************************/

// alert('found dw_tooltip.js');		// DEBUG

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);}
		    	this.ready=true;
	    	}
	},
    	show:function(e,msg)
    	{
    		if(this.timer){clearTimeout(this.timer);this.timer=0;}
    		if(!this.ttready)return;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);
	    }
	 };
	    
/*  Start: Tooltip functions  ----------------------------------------------------------------------------------------------------------------------- */

function doTooltip(e, msg) 
{
  if ( typeof Tooltip == "undefined" || !Tooltip.ready ) return;
  Tooltip.clearTimer();
  var tip = document.getElementById? document.getElementById(Tooltip.tipID): null;
  if ( tip && tip.onmouseout == null ) 
  {
      tip.onmouseout = Tooltip.tipOutCheck;
      tip.onmouseover = Tooltip.clearTimer;
  }
  // alert("doTooltip: e=" + e + " and msg=" + msg);		// DEBUG
  Tooltip.show(e, msg);
}

function doTooltipTextImage(e, ar) {
    if ( typeof Tooltip == "undefined" || !Tooltip.ready ) return;
    var cntnt = wrapTipContent(ar);
    var tip = document.getElementById( Tooltip.tipID );
    Tooltip.show(e, cntnt);
}

/* To hide onmouseoout  
function hideTip() {
  if ( typeof Tooltip == "undefined" || !Tooltip.ready ) return;
  Tooltip.hide();
}
*/

/* To give the user time to click on the link in the tooltip */
function hideTip() {
  if ( typeof Tooltip == "undefined" || !Tooltip.ready ) return;
  Tooltip.timerId = setTimeout("Tooltip.hide()", 300);
}

Tooltip.tipOutCheck = function(e) {
  e = dw_event.DOMit(e);
  // is element moused into contained by tooltip?
  var toEl = e.relatedTarget? e.relatedTarget: e.toElement;
  if ( this != toEl && !contained(toEl, this) ) Tooltip.hide();
}

// returns true of oNode is contained by oCont (container)
function contained(oNode, oCont) {
  if (!oNode) return; // in case alt-tab away while hovering (prevent error)
  while ( oNode = oNode.parentNode ) if ( oNode == oCont ) return true;
  return false;
}

Tooltip.timerId = 0;
Tooltip.clearTimer = function() {
  if (Tooltip.timerId) { clearTimeout(Tooltip.timerId); Tooltip.timerId = 0; }
}

Tooltip.unHookHover = function () {
    var tip = document.getElementById? document.getElementById(Tooltip.tipID): null;
    if (tip) {
        tip.onmouseover = null; 
        tip.onmouseout = null;
        tip = null;
    }
}


function wrapTipContent(ar) {
    var cntnt = "";
    if ( ar[0] ) cntnt += '<div class="img"><img src="' + ar[0] + '"></div>';
    if ( ar[1] ) cntnt += '<div class="txt">' + ar[1] + '</div>';
    return cntnt;
}

dw_event.add(window, "unload", Tooltip.unHookHover, true);

/*  End: Tooltip functions  ----------------------------------------------------------------------------------------------------------------------- */

var dw_Inf={};
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/* */