var agt=navigator.userAgent.toLowerCase();
    var is_major = parseInt(navigator.appVersion);
    var is_minor = parseFloat(navigator.appVersion);

    var is_nav  = ((agt.indexOf('mozilla')!=-1) && (agt.indexOf('spoofer')==-1)
                && (agt.indexOf('compatible') == -1) && (agt.indexOf('opera')==-1)
                && (agt.indexOf('webtv')==-1) && (agt.indexOf('hotjava')==-1));
    var is_nav4 = (is_nav && (is_major == 4));
    var is_nav6 = (is_nav && (is_major == 5));
    var is_nav6up = (is_nav && (is_major >= 5));
    var is_ie     = ((agt.indexOf("msie") != -1) && (agt.indexOf("opera") == -1));


var offsetX = 10;
var offsetY = 8;
var opacity = 100;
var toolTipSTYLE;

function initToolTips(){
	if(document.getElementById){
		toolTipSTYLE = document.getElementById("toolTipLayer").style;
	}
	if(is_ie || is_nav6up){
		toolTipSTYLE.visibility = "visible";
		toolTipSTYLE.display = "none";
		toolTipSTYLE.position = "absolute";
		document.onmousemove = moveToMousePos;
	}
}

function moveToMousePos(e){
	if(!is_ie){
		x = e.pageX;
		y = e.pageY;
	}else{
		x = event.x + document.body.scrollLeft;
		y = event.y + document.body.scrollTop;
	}

	toolTipSTYLE.left = x + offsetX+'px';
	toolTipSTYLE.top = y + offsetY+'px';
	return true;
}


function toolTip(msg){
	if(toolTip.arguments.length < 1)  {
		if(is_nav4)
			toolTipSTYLE.visibility = "hidden";
		else
			toolTipSTYLE.display = "none";
	}  else  {
		var content = "<div class='toolTip'>"+msg+"</div>";
		if(is_nav4)    {
			toolTipSTYLE.document.write(content);
			toolTipSTYLE.document.close();
			toolTipSTYLE.visibility = "visible";
		}
		else if(is_ie || is_nav6up)    {
			document.getElementById("toolTipLayer").innerHTML = content;
			toolTipSTYLE.display='block'
		}
	}
}