/*	-------------------------------------------------------------------------------- */

//	description: javascript for show info on project links

//	author: cornel boppart
//	date: may 2009

/*	-------------------------------------------------------------------------------- */
// please do not make changes in this file!

/*	-------------------------------------------------------------------------------- */

var tooltip = function() {
	var id = 'tt';
	var top = 3;
	var left = 3;
	var maxw = 300;
	var speed = 3;
	var timer = 10;
	var endalpha = 90;
	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 = 0;
				tt.style.filter = 'alpha(opacity=0)';
				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);
		},
		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'}
			}
		},
		hide: function() {
			clearInterval(tt.timer);
			tt.timer = setInterval(function(){tooltip.fade(-1)},timer);
		}
	};
}();