/*************************************************************************
	  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!
	*************************************************************************/
	
	// adjust horizontal and vertical offsets here
	// (distance from mouseover event which activates tooltip)
	Tooltip.offX = 4;  
	Tooltip.offY = 4;
	Tooltip.followMouse = false;  // must be turned off for hover-tip
	

	
	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;
	  }
	  Tooltip.show(e, msg);
	}
	
	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;
	    }
	}
	
	dw_event.add(window, "unload", Tooltip.unHookHover, true);