/**
 * @author joao
 */
var OP = (navigator.userAgent.indexOf('Opera') != -1);
var IE = (navigator.userAgent.indexOf('MSIE') != -1 && !OP);
var NN4 = document.layers;
var DOM = document.getElementById;
function TOOLTIP(){
    this.width = 250;
    this.bgColor = '#444444';
    this.textColor = '#f0f0f0';
    this.borderColor = '#CCCCCC';
    this.opacity = 100;
    this.cursorDistance = 5;
    this.text = '';
    this.height = 0;
    this.obj = 0;
    this.sobj = 0;
    this.active = false;
    this.create = function(){
        if (!this.sobj) 
            this.init();
        var t = '<table border=0 cellspacing=0 cellpadding=4 width=' + this.width + ' bgcolor=' + this.bgColor + '><tr>' + '<td align=center><font color=' + this.textColor + '>' + this.text + '</font></td></tr></table>';
        if (NN4) {
            t = '<table border=0 cellspacing=0 cellpadding=1><tr><td bgcolor=' + this.borderColor + '>' + t + '</td></tr></table>';
            this.sobj.document.write(t);
            this.sobj.document.close();
        }
        else {
            this.sobj.border = '1px solid ' + this.borderColor;
            this.setOpacity();
            if (document.getElementById) 
                document.getElementById('ToolTip').innerHTML = t;
            else 
                document.all.ToolTip.innerHTML = t;
        };
        if (DOM) 
            this.height = this.obj.offsetHeight;
        else 
            if (IE) 
                this.height = this.sobj.pixelHeight;
            else 
                if (NN4) 
                    this.height = this.obj.clip.bottom;
        this.show();
    };
    this.init = function(){
        if (DOM) {
            this.obj = document.getElementById('ToolTip');
            this.sobj = this.obj.style;
        }
        else 
            if (IE) {
                this.obj = document.all.ToolTip;
                this.sobj = this.obj.style;
            }
            else 
                if (NN4) {
                    this.obj = document.ToolTip;
                    this.sobj = this.obj;
                }
    };
    this.show = function(){
        var ext = (document.layers ? '' : 'px');
        var left = mouseX;
        var top = mouseY;
        if (left + this.width + this.cursorDistance - scrX > winX) 
            left -= this.width + this.cursorDistance;
        else 
            left += this.cursorDistance;
        if (top + this.height + this.cursorDistance - scrY > winY) 
            top -= this.height;
        else 
            top += this.cursorDistance;
        this.sobj.left = left + ext;
        this.sobj.top = top + ext;
        if (!this.active) {
            this.sobj.visibility = 'visible';
            this.active = true;
        }
    };
    this.hide = function(){
        if (this.sobj) 
            this.sobj.visibility = 'hidden';
        this.active = false;
    };
    this.setOpacity = function(){
        this.sobj.filter = 'alpha(opacity=' + this.opacity + ')';
        this.sobj.mozOpacity = '.1';
        if (this.obj.filters) 
            this.obj.filters.alpha.opacity = this.opacity;
        if (!document.all && this.sobj.setProperty) 
            this.sobj.setProperty('-moz-opacity', this.opacity / 100, '');
    };
};
function getScrX(){
    if (window.pageXOffset) 
        scrX = window.pageXOffset;
    else 
        if (document.documentElement && document.documentElement.scrollLeft) 
            scrX = document.documentElement.scrollLeft;
        else 
            if (document.body && document.body.scrollLeft) 
                scrX = document.body.scrollLeft;
};
function getScrY(){
    if (window.pageYOffset) 
        scrY = window.pageYOffset;
    else 
        if (document.documentElement && document.documentElement.scrollTop) 
            scrY = document.documentElement.scrollTop;
        else 
            if (document.body && document.body.scrollTop) 
                scrY = document.body.scrollTop;
};
function getWinSize(){
    if (window.innerWidth) {
        winX = window.innerWidth - 20;
        winY = window.innerHeight - 20;
    }
    else 
        if (document.documentElement && document.documentElement.offsetWidth) {
            winX = document.documentElement.offsetWidth - 20;
            winY = document.documentElement.offsetHeight - 20;
        }
        else 
            if (document.body && document.body.offsetWidth) {
                winX = document.body.offsetWidth - 20;
                winY = document.body.offsetHeight - 20;
            }
            else {
                winX = screen.width - 20;
                winY = screen.height - 20;
            }
};
function getMouseXY(e){
    getScrX();
    getScrY();
    getWinSize();
    if (IE) {
        mouseX = event.clientX + scrX;
        mouseY = event.clientY + scrY;
    }
    else {
        mouseX = e.pageX;
        mouseY = e.pageY;
    };
    if (mouseX < 0) 
        mouseX = 0;
    if (mouseY < 0) 
        mouseY = 0;
    if (tooltip && tooltip.active) 
        tooltip.show();
};
function toolTip(text, width, opacity){
    if (text) {
        tooltip = new TOOLTIP();
        tooltip.text = text;
        if (width) 
            tooltip.width = width;
        if (opacity) 
            tooltip.opacity = opacity;
        tooltip.create();
    }
    else 
        if (tooltip) 
            tooltip.hide();
};
var tooltip = mouseX = mouseY = winX = winY = scrX = scrY = 0;
if (NN4) {
    document.write('<layer id="ToolTip"></layer>');
    document.captureEvents(Event.MOUSEMOVE);
}
else 
    document.write('<div id="ToolTip" style="position:absolute; z-index:1100"></div>');
document.onmousemove = getMouseXY;