var tooltip=function(){
	var id = 'tt';
	var top = 3;
	var left = 3;
	var maxw = 300;
	var speed = 10;
	var timer = 20;
	var endalpha = 87;
	var alpha = 0;
	var tt,t,c,h;
	var ie = document.all ? true : false;
	return{
		show:function(hd,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');
				tt.appendChild(t);
				tt.appendChild(c);
				document.body.appendChild(tt);
				tt.style.opacity = 0;
				tt.style.filter = 'alpha(opacity=0)';
				document.onmousemove = this.pos;
			}
			tt.style.display = 'block';
			t.innerHTML = hd;
			c.innerHTML = v;			
			tt.style.width = w ? w + 'px' : 'auto';
			if(!w && ie){
				t.style.display = 'none';
				tt.style.width = tt.offsetWidth;
				t.style.display = 'block';
			}
			if(tt.offsetWidth > maxw){tt.style.width = maxw + 'px'}
			h = parseInt(tt.offsetHeight) + top;
			clearInterval(tt.timer);
			if(w){tt.style.width = w};
			tt.timer = setInterval(function(){tooltip.fade(1)},timer);
		},
		pos:function(e){
			var u = ie ? event.clientY + document.documentElement.scrollTop + document.body.scrollTop : e.pageY;
			var l = ie ? event.clientX + document.documentElement.scrollLeft  + document.body.scrollLeft: e.pageX;
			//c.innerHTML = 'clientY: '+event.clientY+'dE.scrollTop: '+document.documentElement.scrollTop+'body.scrollTop: '+document.body.scrollTop +'offsetHeight: '+ tt.offsetHeight;
			if(ie) e = window.event;
			if (e.clientY <= tt.offsetHeight) u = u + tt.offsetHeight;
			//tt.title = (u-tt.offsetHeight) + ' - ' + u;
			h = parseInt(tt.offsetHeight) + top;
			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'}
			}
		},
		hide:function(){
			clearInterval(tt.timer);
			tt.timer = setInterval(function(){tooltip.fade(-1)},timer);
		}
	};
}();