// This is the javascript for tooltip popups. //
var cnTooltip = function() {
	
	// private
	
	// position of the tooltip relative to the mouse in pixel //
	var offsetx = 12;
	var offsety =  8;

	function newelement(newid, size)
	{ 
	    if(document.createElement)
	    { 
	        var el = document.createElement('div'); 
	        el.id = newid;     
	        with(el.style)
	        { 
	            display = 'none';
	            position = 'absolute';
	        } 
	        el.innerHTML = ' '; 
	        document.body.appendChild(el); 
	    } 
	}
	
	var ie5 = (document.getElementById && document.all); 
	var ns6 = (document.getElementById && !document.all); 
	var ua = navigator.userAgent.toLowerCase();
	var isapple = (ua.indexOf('applewebkit') != -1 ? 1 : 0);
	
	function getmouseposition(e)
	{
	    if(document.getElementById)
	    {
	        var iebody=(document.compatMode && 
	        	document.compatMode != 'BackCompat') ? 
	        		document.documentElement : document.body;
	        pagex = (isapple == 1 ? 0:(ie5)?iebody.scrollLeft:window.pageXOffset);
	        pagey = (isapple == 1 ? 0:(ie5)?iebody.scrollTop:window.pageYOffset);
	        mousex = (ie5)?event.x:(ns6)?clientX = e.clientX:false;
	        mousey = (ie5)?event.y:(ns6)?clientY = e.clientY:false;
	
	        var lixlpixel_tooltip = document.getElementById('tooltip');
	        lixlpixel_tooltip.style.left = (mousex+pagex+offsetx) + 'px';
	        lixlpixel_tooltip.style.top = (mousey+pagey+offsety) + 'px';
	    }
	}
	
	// public
	
	return {
		tooltip: function(tip, size) {
			if (tip=='') return; // no tooltip to display
		    if(!document.getElementById('tooltip')) newelement('tooltip');
		    var lixlpixel_tooltip = document.getElementById('tooltip');
		    lixlpixel_tooltip.innerHTML = tip;
		    lixlpixel_tooltip.style.display = 'block';
		    if (size != null) {
		         lixlpixel_tooltip.style.width = size + 'px'
		
		    } else {
		         lixlpixel_tooltip.style.width = null;
		    }
		    document.onmousemove = getmouseposition;
		},
		exit: function() { 
			var el = document.getElementById('tooltip');
			if (el==null) return; 
			el.style.display = 'none'; 
		}
	};
}();

function _tooltip(tip, size) { cnTooltip.tooltip(tip, size); }
function _exit() { cnTooltip.exit(); }