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;
  }

}

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 Tooltip = {
    followMouse: false,
    offX: 8,
    offY: 12,
    tipID: "tipDiv",
    showDelay: 500,
    hideDelay: 2000,
    fixedX: 0,
    fixedY: 0,
	ready:false,
    timer:null,
    tip:null,
    divOverSelect: false, 
    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 (this.offY == 'none')
    	{
    		this.offY = this.tip.offsetHeight * (-1);
    	}
//    	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;
//    	
//    	alert(this.tip.offsetWidth);
//    	alert(this.tip.offsetHeight);
    	var fx = this.fixedX;
    	var fy = this.fixedY;
    	if (this.fixedX + this.offX + this.tip.offsetWidth > viewport.width+viewport.scrollX)
    	{
    	   fx = this.fixedX  + 10 - this.tip.offsetWidth;
    	   if(this.fixedX + this.offX <viewport.scrollX)
    		    fx = viewport.width + viewport.scrollX - this.tip.offsetWidth;
    	}	    
    	else
    	   fx = this.fixedX + this.offX;
    	   
    	if (this.fixedY + this.offY + this.tip.offsetHeight > viewport.height+viewport.scrollY)
    	{
    	   fy = this.fixedY + 10 - this.tip.offsetHeight;
    	   if(this.fixedY + this.offY < viewport.scrollY)
    		    fy = viewport.height + viewport.scrollY - this.tip.offsetHeight;
    	}	    
        else
           fy = this.fixedY + this.offY;
           
    	if (this.fixedX)
    	 this.tip.style.left = fx+"px";
    	else
    	 this.tip.style.left = x+"px"; 
    	 
    	if (this.fixedY)
    	 this.tip.style.top = fy+"px";
    	else    	
    	 this.tip.style.top=y+"px";
		
    	if(this.divOverSelect)
    	{
			var appVer = navigator.appVersion.toLowerCase();
			var iePos = appVer.indexOf('msie');
			if (iePos !=-1) 
			{
				//IE
				this.tip.style.position = 'absolute';
				this.tip.innerHTML += ' <iframe id="frmProtect" scrolling="no" frameborder="0" style="position:absolute; top:0px; left:0px; display:block;"></iframe>';		
				var frmHover = document.getElementById('frmProtect');		
				frmHover.style.width = this.tip.offsetWidth;
				frmHover.style.height = this.tip.offsetHeight;
				frmHover.style.zIndex = this.tip.style.zIndex - 1;    					
			}
			else 
			{
				//Mozilla
				this.tip.style.position = 'absolute';
				this.tip.innerHTML += ' <iframe id="frmProtect" scrolling="no" frameborder="0" style="position:absolute; top:0px; left:0px; display:block;"></iframe>';		
				var frmHover = document.getElementById('frmProtect');		
				frmHover.style.width = this.tip.offsetWidth;
				frmHover.style.height = this.tip.offsetHeight;
				frmHover.style.zIndex = this.tip.style.zIndex - 1;				
			}
    	}
    }
    },
    
    
    
    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);}};

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()", 2000);
}

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);