function chkFormular(wert)
                     {
                     var err='';
                     var cl='#660000';
                     var bcl='#ffffff';
                     var errcl='#000000';
                     var errbcl='#FFCCCC';
                     var feld = wert.split(',');
                     for(i=0;i<feld.length; i++)
                         {
                         var feldwert=feld[i].split('|');
                         var objfeld = window.document.getElementById(feldwert[0]);
                         objfeld.style.color=cl;
                         objfeld.style.backgroundColor=bcl;
                         if(err=='')
                            {
                            if (objfeld.value == "")
                                {
                                var objerr=objfeld;
                                err="Bitte alle mit einem Sternchen markierten Felder ausfüllen!";
                            }
                            else if(feldwert[1] && objfeld.value.length>feldwert[1])
                                 {
                                 var objerr=objfeld;
                                 err="Ihre Nachricht enthält "+objfeld.value.length+" Zeichen, erlaubt sind max. "+feldwert[1]+"!";
                            }
                         }
                     }
                     if(objerr && err!='')
                        {
                        objerr.style.color=errcl;
                        objerr.style.backgroundColor=errbcl;
                        objerr.focus();
                        alert(err);
                        return false;
                     }
                     else
                         {
                         return true;
                     }
}

function bild(imageName,imageWidth,imageHeight, titel){

         imageHeight=parseInt(imageHeight);
         imageWidth=parseInt(imageWidth);
         var Height=imageHeight+40;
         postop=screen.height/2-Height/2;
         posleft=screen.width/2-imageWidth/2;
         if(typeof newWindow != 'undefined')
         {
         newWindow.close();
         }

        newWindow = window.open("","newWindow","width="+imageWidth+",height="+Height+",scrollbars=no,left="+posleft+",top="+postop+"");
        newWindow.document.open();
        newWindow.document.write('<html><title>'+titel+'</title>');
        newWindow.document.write('<link rel=\"stylesheet\" href=\"../style/style.css\" type=\"text/css\"><body>');
        newWindow.document.write('<div align=\"center\"><img src=\"'+imageName+'\" width='+imageWidth+' height='+imageHeight+' alt=\"schliessen\" onClick=\"javascript:self.close()\"><br>&raquo; '+titel+' &laquo;</div>');
        newWindow.document.write('</body></html>');
        newWindow.document.close();
        newWindow.focus();
}
