var tooltip=function(){
	var id = 'tt';
	var top = 3;
	var left = 3;
	var maxw = 300;
	var speed = 12;
	var timer = 20;
	var endalpha = 100;
	var alpha = 0;
	var tt,t,c,b,h;
	if(detectBrowser()=="no") speed=200;	// si IE no renderiza rápido usamos este valor
	if(detectBrowser()=="ie6") speed=200;	// IE6 (es muy lento)
	if(detectBrowser()=="ie7") speed=200;	// IE7 es un poco más rápido de IE6 pero no tanto como Safari o FF
	var ie = document.all ? true : false;
	return{
		show:function(v,w){
			if(tt == null){
				//tt = document.getElementById('tt');
				//c = document.getElementById('ttcont');
				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(b);
				tt.style.zIndex = 999;
				tt.style.display='none'
				document.body.appendChild(tt);
				tt.appendChild(c);
				//tt.style.top=0;
				//tt.style.left=0;
				tt.style.opacity = 0;
				tt.style.filter = 'alpha(opacity=0)';
				document.onmousemove = this.pos;
			}
				//tt.style.top=0;
			tt.style.top=ie ? event.clientY + document.documentElement.scrollTop : void(0);
			tt.style.left=ie ? event.clientX + document.documentElement.scrollLeft : void(0);
			tt.style.display = 'block';
			c.innerHTML = v;
			tt.style.width = w ? w + 'px' : 'auto';
			if (speed==200) {
			tt.style.opacity = 1;
			tt.style.filter = 'alpha(opacity=100)';
			}
			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);
		},
		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.top = u + 14 + 'px';
			//alert(document.body.clientWidth);
			if (document.body.clientWidth<(l+tt.offsetWidth)) l=(document.body.clientWidth-tt.offsetWidth-10) ;
			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';
				//tt.removeChild(c);
				//var x=document.getElementById('tt'); 
				//var y= x.parentNode;
				//y.removeChild(x);
				tt=null;
				document.onmousemove = null;
				}
			}
		},
		hide:function(){
			clearInterval(tt.timer);
			tt.timer = setInterval(function(){tooltip.fade(-1)},timer);
		}
	};
}();