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var AktDocument = 0;

function DetectBrowser ()
{
var browsername = navigator.appName;

        if (browsername.indexOf("Microsoft") != -1)
        {
           browser = "MSIE";
        }
        else
        {
           browser = "Other";
        }

        return browser;
}

function MoveTo (url, pars)
{
        if (pars.length > 0)
        {
           window.location = url + "?" + pars;
        }
        else
        {
           window.location = url;
        }
}

function SetValue(target, val)
{
        ziel = eval(target);
        ziel.value = val;
}

function KeyEvent(formular)
{
        if (DetectBrowser() == "MSIE")
        {
           if (window.Event.keyCode == 13)
              formular.submit();
        }
        else
        {
           if (window.Event.which == 13)
              formular.submit();
        }
}

function Tastendruck(Ereignis)
{
        if (!Ereignis)
           Ereignis = window.event;

        if (Ereignis.keyCode == 13 && AktDocument != 0)
           AktDocument.submit();
}

function SetDate(duration, datum, target)
{
        sarr = datum.value.split(".");
        day = sarr[0];
        mon = sarr[1];
        year = sarr[2];
        d = new Date(year, mon-1, day);
        dsec = d.getTime() + (duration * 86400000);
        dt = new Date(dsec);
        day = dt.getDate();
        mon = dt.getMonth() + 1;
        year = dt.getFullYear();
        target.value = day + "." + mon + "." + year;
}

function SetDuration(dtstart, dtend, target)
{
        dsarr = dtstart.value.split(".");
        sday = dsarr[0];
        smon = dsarr[1];
        syear = dsarr[2];
        ds = new Date(syear, smon-1, sday);
        dearr = dtend.split(".");
        eday = dearr[0];
        emon = dearr[1];
        eyear = dearr[2];
        de = new Date(eyear, emon-1, eday);
        ssec = ds.getTime() / 1000;
        esec = de.getTime() / 1000;
        diff = (esec - ssec) / 86400;
        target.value = diff;
}

function CheckDateOrder(dtstart, dtend)
{
        dsarr = dtstart.value.split(".");
        sday = dsarr[0];
        smon = dsarr[1];
        syear = dsarr[2];
        ds = new Date(syear, smon-1, sday);
        dearr = dtend.value.split(".");
        eday = dearr[0];
        emon = dearr[1];
        eyear = dearr[2];
        de = new Date(eyear, emon-1, eday);
        ssec = ds.getTime();
        esec = de.getTime();

        if (ssec > esec)
        {
           alert("Das Startdatum muss kleiner als das Endedatum sein!");
           dtstart.focus();
           return false;
        }

        return true;
}

function CheckDate(datum, light)
{
        dsarr = datum.value.split(".");

        if (light)
        {
           day = 1;
           mon = dsarr[0];
           year = dsarr[1];
        }
        else
        {
           day = dsarr[0];
           mon = dsarr[1];
           year = dsarr[2];
        }

        dat = new Date(year, mon-1, day);
        cday = dat.getDate();
        cmon = dat.getMonth() + 1;
        cyear = dat.getFullYear();

        if (cday != day || cmon != mon || cyear != year)
        {
           alert("Ungültiges Datum!");
           datum.focus();
           return false;
        }

        return true;
}

function CheckTime(zeit)
{
var hour = 0;
var min = 0;

        zarr = zeit.value.split(":");
        hour = zarr[0];
        min = zarr[1];

        if (hour < 0 || hour > 23 || min < 0 || min > 59)
        {
           alert("Ungültige Uhrzeit!");
           zeit.focus();
           return false;
        }

        return true;
}

function CheckOverload(val, ist_hours, max_hours)
{
var wert = val.value;

        wert = wert.replace(/,/, ".");

        if (ist_hours >= max_hours)
        {
           alert("Diese Ressource ist bereits mit "+ist_hours+" PT's von maximal "+max_hours+" überbucht!");
           val.focus();
           return false;
        }

        rest = max_hours - ist_hours;

        if (wert > rest)
        {
           zuviel = wert - rest;
           alert("Diese Ressource ist mit "+zuviel+" PT's von maximal "+max_hours+" überbucht!");
           val.focus();
           return false;
        }

        return true;
}

function dx(d)
{
var z = new Array("0","1","2","3","4","5","6","7","8","9","a","b","c","d","e","f");
var x = "";
var i = 1, v = d, r = 0;

        max = Math.pow(16,8);
        hex = "";

        if(d > max)
        {
           hex = "NIL";
           return hex;
        }

        if(d < 0)
        {
           hex = "NIL";
           return hex;
        }

        while(v > 15)
        {
           v = Math.floor(v / 16);
           i++;
        }

        v = d;

        for(j = i; j >= 1; j--)
        {
           x = x + z[Math.floor(v / Math.pow(16,j-1))];
           v = v - (Math.floor(v / Math.pow(16,j-1)) * Math.pow(16,j-1));
        }

        hex = x;

        if (hex.length < 2)
        {
           hex = "0"+hex;
        }

        return hex;
}

function Farbe(R,G,B,target)
{
var Rx = dx(R);
var Gx = dx(G);
var Bx = dx(B);
var color = Rx+Gx+Bx;

        SetValue(target, color);
}

function NumRange(num, low, high)
{
var zahl = num.value;

        if (zahl < low || zahl > high)
        {
           alert("Eingegebener Wert ist außerhalb des gültigen Bereichs!");
           num.focus();
           return false;
        }

        return true;
}

function FormatNum(num, komma)
{
var vork = parseInt(num);
var nachk = 0;
var str = "";

        if ((num > 0.0 || num < 0.0) && vork != num)
           nachk = parseInt((num - vork) * Math.pow(10, komma));
        else if (vork == num)
        {
           str = String(vork) + ",";
           i = 0;

           while (i < komma)
           {
              str = str + "0";
              i++;
           }

           return str;
        }
        else if (num == 0.0)
        {
           str = "0,";
           i = 0;

           while (i < komma)
           {
              str = str + "0";
              i++;
           }

           return str;
        }

        str = String(vork) + "," + String(nachk);
        return str;
}

function CheckTrue(b)
{
        if (b == "true" || b == "t" || b == true || b == 1)
           return true;

        return false;
}

function open_window(mypage, myname, w, h)
{
var winl = screen.width;
var wint = screen.height;
var menubar = 'yes';
var browser = DetectBrowser();

        if (winl < w)
           winl = 0;
        else
           winl = (winl - w) / 2;

        if (wint < h)
           wint = 0;
        else
           wint = (wint - h) / 2;

        if (browser == 'MSIE')
           menubar = 'no';

        winprops = 'height='+h+',width='+w+',top='+wint+',left='+winl+',scrollbars=yes,resizeable=yes,menubar='+menubar+',dependent=yes';
        win = window.open(mypage,myname,winprops);

        if (parseInt(navigator.appVersion) >= 4)
        {
           win.window.focus();
        }
}

function open_mwindow(mypage, myname, w, h)
{
var winl = screen.width;
var wint = screen.height;
var menubar = 'yes';
var browser = DetectBrowser();

        if (winl < w)
           winl = 0;
        else
           winl = (winl - w) / 2;

        if (wint < h)
           wint = 0;
        else
           wint = (wint - h) / 2;

        if (browser == 'MSIE')
           menubar = 'no';

        winprops = 'height='+h+',width='+w+',top='+wint+',left='+winl+',scrollbars=yes,resizeable=yes,menubar='+menubar+',dependent=yes';
        win = window.open(mypage,myname,winprops);

        if (parseInt(navigator.appVersion) >= 4)
        {
           win.window.focus();
        }

        win.window.print();
}