// VARIABLEN
var mousedistance = [15,15]; // Vertikaler und horizontaler Abstand vom Mauszeiger
var scrollbarSize = [20,20]; // Höhe des horizontalen und Breite des vertikalen Scrollbalkens
var chaserW;
var chaserH;
var chaserID = 'chaser';

if (document.getElementById || document.all)
//document.write('<div id="chaser"></div>')

// NEUEN CHASER ANLEGEN -------------------------------------------------------------------------------------------------------------------
function newelement() {

        if (document.createElement) {

                var el = document.createElement('div');
                el.id = chaserID;

                with(el.style) {
                        display = 'none';
                        position = 'absolute';
                        left = '-1000px';
                }

                document.body.appendChild(el);

        }

}

// MITZUBEWEGENDES OBJEKT ZURÜCKGEBEN -----------------------------------------------------------------------------------------------------
function getchaser (withstyle) {
        if (document.getElementById) {
                if (withstyle) {
                        return document.getElementById(chaserID).style;
                } else {
                        return document.getElementById(chaserID);
                }
        } else if (document.all) {
                if (withstyle) {
                        return document.all.chaserID.style;
                } else {
                        return document.all.chaserID;
                }
        }
}

// ERMITTELN DES ROOT-ELEMENTS ------------------------------------------------------------------------------------------------------------
function realroot () {
        return (!window.opera && document.compatMode && document.compatMode!='BackCompat')? document.documentElement : document.body
}


// TOOLTIP ANZEIGEN -----------------------------------------------------------------------------------------------------------------------
function showChaser (html, width, cssClass) {

        if(!getchaser(0)) newelement();

        getchaser(0).innerHTML = html;
        getchaser(1).display = 'block';
        getchaser(1).width = width + 'px';
        getchaser(0).className = cssClass;

        chaserH = getchaser(0).offsetHeight;
        chaserW = getchaser(0).offsetWidth;

        document.onmousemove = chaseMouse;

}

// TOOLTIP VERSTECKEN ---------------------------------------------------------------------------------------------------------------------
function hideChaser () {
        getchaser(0).innerHTML = ' ';
        getchaser(1).display = 'none';
        document.onmousemove = '';
        getchaser(1).left = '-1000px';
}

// MAUS-VERFOLGER -------------------------------------------------------------------------------------------------------------------------
function chaseMouse (e) {

        var xcoord = mousedistance[0];
        var ycoord = mousedistance[1];

        var documentW = document.all? realroot().scrollLeft+realroot().clientWidth : pageXOffset + window.innerWidth - scrollbarSize[1];
        var documentH = document.all? Math.min(realroot().scrollHeight, realroot().clientHeight) : Math.min(window.innerHeight - scrollbarSize[0]);

        if (typeof e != 'undefined'){

                if (documentW - e.pageX < chaserW + mousedistance[0]){
                        xcoord = e.pageX - xcoord - chaserW; // Auf die linke Seite des Mauszeigers wechseln
                } else {
                        xcoord += e.pageX;
                }

                if (documentH - e.pageY < (chaserH + mousedistance[1])){
                        ycoord += e.pageY - Math.max(0,(mousedistance[1] + chaserH + e.pageY - documentH - realroot().scrollTop));
                } else {
                        ycoord += e.pageY;
                }

        } else if (typeof window.event != 'undefined'){

                if (documentW - event.clientX < chaserW + mousedistance[0]){
                        xcoord = event.clientX + realroot().scrollLeft - xcoord - chaserW; // Auf die linke Seite des Mauszeigers wechseln
                } else {
                        xcoord += realroot().scrollLeft + event.clientX;
                }

                if (documentH - event.clientY < (chaserH + mousedistance[1])){
                        ycoord += event.clientY + realroot().scrollTop - Math.max(0,(mousedistance[1] + chaserH + event.clientY - documentH));
                } else {
                        ycoord += realroot().scrollTop + event.clientY;
                }

        }

        var documentW = document.all? realroot().scrollLeft + realroot().clientWidth : pageXOffset + window.innerWidth - scrollbarSize[0];
        var documentH = document.all? Math.max(realroot().scrollHeight, realroot().clientHeight) : Math.max(document.body.offsetHeight, window.innerHeight - scrollbarSize[1]);

        if(ycoord < 0) { ycoord = ycoord*-1; }

        getchaser(1).left = xcoord + 'px'
        getchaser(1).top = ycoord + 'px';

}

function delay (prmSec) {

        prmSec *= 1000;
        var eDate = null;
        var eMsec = 0;
        var sDate = new Date();
        var sMsec = sDate.getTime();

        do {
                eDate = new Date();
                eMsec = eDate.getTime();

        } while ((eMsec - sMsec) < prmSec);

}

function popup(url, name, popupWidth, popupHeight) {
        window.open(url, name, 'width=' + popupWidth + ', height=' + popupHeight + ', toolbar=0, menubar=0, status=0, resizable=0, scrollbars=0, directories=0, location=0');
}