//Global Variables and Constants
is_safari = ((navigator.userAgent.indexOf("Safari")!=-1))?true:false;
isShowing = false;
mouseX = 0;
mouseY = 0;
ttipElement = false;

//Functions
function showTip(toolTipContent)
{
	isShowing = true;
	if(!ttipElement)
	{
		ttipElement = document.createElement("div");
		ttipElement.id = "toolTipBox";
		ttipElement.className = "toolBoxStyle";
		document.getElementsByTagName("body")[0].appendChild(ttipElement);
	}
	ttipElement.style.left = mouseX+10+"px";
  ttipElement.style.top = mouseY+10+document.body.scrollTop+"px";
  ttipElement.style.display = "block";
	ttipWindowHeight = (window.innerHeight) ? window.innerHeight : document.body.clientHeight;
  ttipElement.innerHTML = toolTipContent;
	ttipWindowScrollDistance = (!is_safari) ? ((document.documentElement.scrollTop) ? document.documentElement.scrollTop : document.body.scrollTop ) : window.pageYOffset;
	adjustVerticalPosition();
}

function adjustVerticalPosition()
{
	var ttipOvershoot = (!is_safari) ? ttipElement.offsetHeight + mouseY + 10 : ttipElement.offsetHeight + mouseY + 10 - window.pageYOffset;
	if(ttipOvershoot > ttipWindowHeight)
	{
		ttipElement.style.top = ttipWindowHeight - ttipElement.offsetHeight + ttipWindowScrollDistance + "px";
	}
	else
	{
		ttipElement.style.top = (!is_safari) ? mouseY+10+ttipWindowScrollDistance+"px" : mouseY+10+"px";
	}
}

function hideTip()
{
	if (isShowing)
	{
		ttipElement.style.display = "none";
		isShowing = false;
	}
}

function tipPosition(callingEvent)
{
  if (!callingEvent) callingEvent = window.event;
	mouseX = callingEvent.clientX;
	mouseY = callingEvent.clientY-1;
  if (isShowing)
  {
		ttipElement.style.left = mouseX+10+"px";
		adjustVerticalPosition();
  }
}

function ddrivetip(thisItem) { showTip(thisItem); }
function hideddrivetip() { hideTip(); }

document.onmousemove = tipPosition;
/*

work in progress

var tooltip=function(){
	var id = 'tt';
	extend to respect screenedges
	var top = 3;
	var left = 3;
	var maxw = 425;
	var speed = 20;
	var timer = 20;
	var endalpha = 95;
	var alpha = 0;
	var tt,t,c,b,h;
	var ie = document.all ? true : false;
	return{
		show:function(v,w){
			if(tt == null){
				tt = document.createElement('div');
				tt.setAttribute('id',id);
				t = document.createElement('div');
				t.setAttribute('id',id + 'top');
				c = document.createElement('div');
				c.setAttribute('id',id + 'cont');
				b = document.createElement('div');
				b.setAttribute('id',id + 'bot');
				tt.appendChild(t);
				tt.appendChild(c);
				tt.appendChild(b);
				document.body.appendChild(tt);
				tt.style.opacity = 100;
				tt.style.filter = 'alpha(opacity=1)';
				document.onmousemove = this.pos;
			}
			tt.style.display = 'block';
			c.innerHTML = v;
			tt.style.width = w ? w + 'px' : 'auto';
			if(!w && ie){
				t.style.display = 'none';
				b.style.display = 'none';
				tt.style.width = tt.offsetWidth;
				t.style.display = 'block';
				b.style.display = 'block';
			}
			if(tt.offsetWidth > maxw){tt.style.width = maxw + 'px'}
			h = parseInt(tt.offsetHeight) + top;
			clearInterval(tt.timer);
			tt.timer = setInterval(function(){tooltip.fade(1)},timer);
		},
		hide:function(){
			clearInterval(tt.timer);
			tt.timer = setInterval(function(){tooltip.fade(-1)},timer);
		},
		pos:function(e){
			var u = ie ? event.clientY + document.documentElement.scrollTop : e.pageY;
			var l = ie ? event.clientX + document.documentElement.scrollLeft : e.pageX;
			tt.style.top = (u - h) + 'px';
			tt.style.left = (l + left) + 'px';
		},
		fade:function(d){
			var a = alpha;
			if((a != endalpha && d == 1) || (a != 0 && d == -1)){
				var i = speed;
				if(endalpha - a < speed && d == 1){
					i = endalpha - a;
				}else if(alpha < speed && d == -1){
					i = a;
				}
				alpha = a + (i * d);
				tt.style.opacity = alpha * .01;
				tt.style.filter = 'alpha(opacity=' + alpha + ')';
			}else{
				clearInterval(tt.timer);
				if(d == -1){tt.style.display = 'none'}
			}
		}
	};
}();*/