var sWidthToolTipDefault = 350;
var sWidthToolTip = 250;
var oImage = null;
function closeHelpTip( e )
{
	// find anchor element
	var el = e.target || e.srcElement;
	var typeElement = e.tagName
	while (el.tagName != typeElement)
		el = el.parentNode;
	// is there already a tooltip? If so, remove it
	if (el._helpTip) 
	{
		helpTipHandler.hideHelpTip(el);
		return;
	}
}
function showHelpTip(e, sHtml, bHideSelects, sWidth, oObjImage)
{
	oImage = oObjImage;
	if ((arguments.length >= 4) && (sWidth != null))
		sWidthToolTip = sWidth;
	else sWidthToolTip = sWidthToolTipDefault;
	// find anchor element
	var el = e.target || e.srcElement;
	var typeElement = e.tagName
	while (el.tagName != typeElement)
		el = el.parentNode;
	// is there already a tooltip? If so, remove it
	if (el._helpTip) 
	{
		helpTipHandler.hideHelpTip(el);
		return;
	}
	helpTipHandler.hideSelects = Boolean(bHideSelects);
	// create element and insert last into the body
	helpTipHandler.createHelpTip(el, sHtml);
	// position tooltip
	helpTipHandler.positionToolTip(e);
	// add a listener to the blur event.
	// When blurred remove tooltip and restore anchor
	el.onblur = helpTipHandler.anchorBlur;
	el.onkeydown = helpTipHandler.anchorKeyDown;
}
var helpTipHandler = {
	hideSelects:	false,
	helpTip:		null,
	showSelects:	function (bVisible) {
		/////if (!this.hideSelects) return;
		// only IE actually do something in here
		var selects = [];
	var elmID = "SELECT";
	var overDiv = this.helpTip;
	var h = bVisible;
	},
	create:	function () {
		var d = document.createElement("DIV");
		d.id = "boxHelpTip"
		d.className = "helptooltip";
		d.onmousedown = this.helpTipMouseDown;
		d.onmouseup = this.helpTipMouseUp;
		
		document.body.appendChild(d);		
		this.helpTip = d;
	},
	createHelpTip:	function (el, sHtml) {
		if (this.helpTip == null) {
			this.create();
		}
		var d = this.helpTip;
		d.innerHTML=sHtml;
		d._boundAnchor = el;
		el._helpTip = d;
		return d;
	},
	// Allow clicks on A elements inside tooltip
	helpTipMouseDown:	function (e) {
		var d = this;
		var el = d._boundAnchor;
		if (!e) e = event;
		var t = e.target || e.srcElement;
		while (t.tagName != "A" && t != d)
			t = t.parentNode;
		if (t == d) return;
		
		el._onblur = el.onblur;
		el.onblur = null;
	},
	helpTipMouseUp:	function () {
		var d = this;
		var el = d._boundAnchor;
		el.onblur = el._onblur;
		el._onblur = null;
		el.focus();
	},
	anchorBlur:	function (e) {
		var el = this;
		helpTipHandler.hideHelpTip(el);
	},
	anchorKeyDown:	function (e) {
		if (!e) e = window.event
		if (e.keyCode == 27) {	
			helpTipHandler.hideHelpTip(this);
		}
	},
	removeHelpTip:	function (d) {
		d._boundAnchor = null;
		d.style.filter = "none";
		d.innerHTML = "";
		d.onmousedown = null;
		d.onmouseup = null;
		d.parentNode.removeChild(d);
	},
	hideHelpTip:	function (el) {
		var d = el._helpTip;
		/*	Mozilla (1.2+) starts a selection session when moved
			and this destroys the mouse events until reloaded
		*/
		d.style.visibility = "hidden";
		el.onblur = null;
		el._onblur = null;
		el._helpTip = null;
		el.onkeydown = null;
		this.showSelects(true);
	},
	positionToolTip:	function (e) {
		this.showSelects(false);		
		var scroll = this.getScroll();
		var d = this.helpTip;
		
		if ( sWidthToolTip < 0 )
			d.style.width = ""
		else
			d.style.width = sWidthToolTip;

		ss =scroll.width - d.offsetWidth
		if (e.clientX > ss)
			d.style.left = ss + scroll.left-20 + "px";//less 20 for mozilla and netscape
		else
			d.style.left = e.clientX - 2 + scroll.left - d.offsetWidth + "px";

		if (parseInt(d.style.left) < 0 ) 
			d.style.left = 5 + "px";
		if (e.clientY + d.offsetHeight + 18 < scroll.height)
			d.style.top = e.clientY + 18 + scroll.top + "px";
		else if (e.clientY - d.offsetHeight > 0)
			d.style.top = e.clientY + scroll.top - d.offsetHeight + "px";
		else
			d.style.top = scroll.top + 5 + "px";

		if (oImage)
		{
			if (oImage.offsetParent)
			{
				objLeft   = oImage.offsetLeft;
				objTop    = oImage.offsetTop;
				objParent = oImage.offsetParent;
				while (objParent.tagName.toUpperCase() != "BODY")
				{
					objLeft  += objParent.offsetLeft;
					objTop   += objParent.offsetTop;
					objParent = objParent.offsetParent;
				}
				objBottom = objTop + oImage.offsetHeight - 1;
				objRight = objLeft + oImage.offsetWidth - 1;
				
				divLeft = parseInt(d.style.left);
				divRight = divLeft + d.offsetWidth;
				divTop = parseInt(d.style.top);
				divBottom = divTop + d.offsetHeight;
				if ((
				((objLeft >= divLeft) && (objLeft <= divRight)) ||
				(((objRight) >= divLeft) && (objRight <= divRight)) ||
				((objLeft <= divLeft) && (objRight >= divRight))
				)
				&&
				(
				((objTop >= divTop) && (objTop <= divBottom)) ||
				((objBottom >= divTop) && (objBottom <= divBottom)) ||
				((objTop <= divTop) && (objBottom >= divBottom))
				))
				{
					if (objTop > divTop)
					{
						iNewTop = parseInt(d.style.top) - (divBottom - objTop);
						if (iNewTop >= 0)
						{
							d.style.top = iNewTop + "px";
						}
						else
						{
							if (objLeft > divLeft)
							{
								iNewLeft = parseInt(d.style.left) - (divRight - objLeft);
							}
							else
							{
								iNewLeft = parseInt(d.style.left) + (objLeft - divLeft);
							}
							d.style.left = iNewLeft + "px";
						}
					}
					else
					{
						iNewTop = parseInt(d.style.top) + (objTop - divTop);
						if ((iNewTop + d.offsetHeight) <= scroll.height)
						{
							d.style.top = iNewTop + "px";
						}
						else
						{
							if (objLeft > divLeft)
							{
								iNewLeft = parseInt(d.style.left) - (divRight - objLeft);
							}
							else
							{
								iNewLeft = parseInt(d.style.left) + (objLeft - divLeft);
							}
							d.style.left = iNewLeft + "px";
						}
					}
				}
			}
		}
		d.style.visibility = "visible";
	},
	// returns the scroll left and top for the browser viewport.
	getScroll:	function () {
		if (document.all && typeof document.body.scrollTop != "undefined") {	// IE model
			var ieBox = document.compatMode != "CSS1Compat";
			var cont = ieBox ? document.body : document.documentElement;
			return {
				left:	cont.scrollLeft,
				top:	cont.scrollTop,
				width:	cont.clientWidth,
				height:	cont.clientHeight
			};
		}
		else {
			return {
				left:	window.pageXOffset,
				top:	window.pageYOffset,
				width:	window.innerWidth,
				height:	window.innerHeight
			};
		}
		
	}
};