function getTime() {
    return new Date().getTime();
}

function getTimeDelta(timeBegin, timeEnd) {
    timeEnd = timeEnd || getTime();
    return timeEnd - timeBegin;
}

Number.prototype.NaN0=function() { return isNaN(this) ? 0 : this; }



//var IS_IE = USER_DATA['Browser'].MSIE;

function getPosition(e){
    var left = 0;
    var top  = 0;

    while (e.offsetParent) {
        left += e.offsetLeft + (e.currentStyle ?
            (parseInt(e.currentStyle.borderLeftWidth)).NaN0() : 0);
        top  += e.offsetTop  + (e.currentStyle ?
            (parseInt(e.currentStyle.borderTopWidth)).NaN0() : 0);
        e = e.offsetParent;
    }

    left += e.offsetLeft + (e.currentStyle ?
            (parseInt(e.currentStyle.borderLeftWidth)).NaN0() : 0);
    top  += e.offsetTop  + (e.currentStyle ?
            (parseInt(e.currentStyle.borderTopWidth)).NaN0(): 0); 	

    return {x:left, y:top};
}

function getAlignedPosition(e) {
    var left = 0;
    var top  = 0;

    while (e.offsetParent) {
        left += e.offsetLeft + (e.currentStyle ?
            (parseInt(e.currentStyle.borderLeftWidth)).NaN0() : 0);
        top  += e.offsetTop  + (e.currentStyle ?
            (parseInt(e.currentStyle.borderTopWidth)).NaN0() : 0);
        e  = e.offsetParent;
        if (e.scrollLeft) {left -= e.scrollLeft; }
        if (e.scrollTop)  {top  -= e.scrollTop; }
    }

    var docBody = document.documentElement ?
        document.documentElement : document.body;

    left += e.offsetLeft +
        (e.currentStyle ?
                (parseInt(e.currentStyle.borderLeftWidth)).NaN0()
                : 0) +
        (IS_IE ? (parseInt(docBody.scrollLeft)).NaN0() : 0) -
        (parseInt(docBody.clientLeft)).NaN0();
    top  += e.offsetTop  +
        (e.currentStyle ?
                (parseInt(e.currentStyle.borderTopWidth)).NaN0()
                :  0) +
        (IS_IE ? (parseInt(docBody.scrollTop)).NaN0() : 0) -
        (parseInt(docBody.clientTop)).NaN0();

    return {x:left, y:top};
}


function mouseCoords(ev) {

    if (ev.pageX || ev.pageY) {
        return {x:ev.pageX, y:ev.pageY};
    }

    var docBody = document.documentElement
                        ? document.documentElement
                        : document.body;

    return {
        x: ev.clientX + docBody.scrollLeft - docBody.clientLeft,
        y: ev.clientY + docBody.scrollTop  - docBody.clientTop
    };
}

function getMouseOffset(target, ev, aligned) {
    ev = ev || window.event;
    if (aligned == null) aligned = false;

    var docPos    = aligned
        ? getAlignedPosition(target)
        : getPosition(target);
    var mousePos  = mouseCoords(ev);

    return {
        x: mousePos.x - docPos.x,
        y: mousePos.y - docPos.y
    };
}