var Tooltip = {
	followMouse: true,
	overlaySelects: true,  // iframe shim for select lists (ie win)
	offX: 8,
	offY: 12,
	tipID: "tipDiv",
	showDelay: 100,
	hideDelay: 200,
	
	
	ovTimer:0,ready:false,timer:null,tip:null,shim:null,supportsOverlay:false,init:function(){if(document.createElement&&document.body&&typeof document.body.appendChild!="undefined"){var el=document.createElement("DIV");el.id=this.tipID;document.body.appendChild(el);this.supportsOverlay=this.checkOverlaySupport();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.handleOverlay(1,this.showDelay);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";}this.positionOverlay();},hide:function(){if(this.timer){clearTimeout(this.timer);this.timer=0;}this.handleOverlay(0,this.hideDelay);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);},checkOverlaySupport:function(){if(navigator.userAgent.indexOf("Windows")!=-1&&typeof document.body!="undefined"&&typeof document.body.insertAdjacentHTML!="undefined"&&!window.opera&&navigator.appVersion.indexOf("MSIE 5.0")==-1)return true;else return false;},handleOverlay:function(bVis,d){if(this.overlaySelects&&this.supportsOverlay){if(this.ovTimer){clearTimeout(this.ovTimer);this.ovTimer=0;}switch(bVis){case 1:if(!document.getElementById('tipShim'))document.body.insertAdjacentHTML("beforeEnd",'<iframe id="tipShim" src="about:blank" style="position:absolute; left:0; top:0; z-index:500; visibility:hidden" scrolling="no" frameborder="0"></iframe>');this.shim=document.getElementById('tipShim');if(this.shim&&this.tip){this.shim.style.width=this.tip.offsetWidth+"px";this.shim.style.height=this.tip.offsetHeight+"px";}this.ovTimer=setTimeout("Tooltip.toggleVis('tipShim', 'visible')",d);break;case 0:this.ovTimer=setTimeout("Tooltip.toggleVis('tipShim', 'hidden')",d);if(this.shim)this.shim=null;break;}}},positionOverlay:function(){if(this.overlaySelects&&this.supportsOverlay&&this.shim){this.shim.style.left=this.tip.style.left;this.shim.style.top=this.tip.style.top;}}};Tooltip.ttready=true;



function doTooltip(e, msg) {
  if ( typeof Tooltip == "undefined" || !Tooltip.ready ) return;
  Tooltip.show(e, msg);
}

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


var viewport = {
  getWinWidth: function () {
    this.width = 0;
    if (window.innerWidth) this.width = window.innerWidth - 18;
    else if (document.documentElement && document.documentElement.clientWidth) 
  		this.width = document.documentElement.clientWidth;
    else if (document.body && document.body.clientWidth) 
  		this.width = document.body.clientWidth;
  },
  
  getWinHeight: function () {
    this.height = 0;
    if (window.innerHeight) this.height = window.innerHeight - 18;
  	else if (document.documentElement && document.documentElement.clientHeight) 
  		this.height = document.documentElement.clientHeight;
  	else if (document.body && document.body.clientHeight) 
  		this.height = document.body.clientHeight;
  },
  
  getScrollX: function () {
    this.scrollX = 0;
  	if (typeof window.pageXOffset == "number") this.scrollX = window.pageXOffset;
  	else if (document.documentElement && document.documentElement.scrollLeft)
  		this.scrollX = document.documentElement.scrollLeft;
  	else if (document.body && document.body.scrollLeft) 
  		this.scrollX = document.body.scrollLeft; 
  	else if (window.scrollX) this.scrollX = window.scrollX;
  },
  
  getScrollY: function () {
    this.scrollY = 0;    
    if (typeof window.pageYOffset == "number") this.scrollY = window.pageYOffset;
    else if (document.documentElement && document.documentElement.scrollTop)
  		this.scrollY = document.documentElement.scrollTop;
  	else if (document.body && document.body.scrollTop) 
  		this.scrollY = document.body.scrollTop; 
  	else if (window.scrollY) this.scrollY = window.scrollY;
  },
  
  getAll: function () {
    this.getWinWidth(); this.getWinHeight();
    this.getScrollX();  this.getScrollY();
  }
  
}






var dw_event = {
  
  add: function(obj, etype, fp, cap) {
    cap = cap || false;
    if (obj.addEventListener) obj.addEventListener(etype, fp, cap);
    else if (obj.attachEvent) obj.attachEvent("on" + etype, fp);
  }, 

  remove: function(obj, etype, fp, cap) {
    cap = cap || false;
    if (obj.removeEventListener) obj.removeEventListener(etype, fp, cap);
    else if (obj.detachEvent) obj.detachEvent("on" + etype, fp);
  }, 

  DOMit: function(e) { 
    e = e? e: window.event;
    e.tgt = e.srcElement? e.srcElement: e.target;
    
    if (!e.preventDefault) e.preventDefault = function () { return false; }
    if (!e.stopPropagation) e.stopPropagation = function () { if (window.event) window.event.cancelBubble = true; }
        
    return e;
  }
  
}