// Parameter: Name des Monatfeldes, name des formulars, name des jahresfeldes, name des tagesfeldes
function setMonth(pmonth,pform,yearfield,dayfield)
{
	m=eval("document."+pform+"."+pmonth+".value");
	y=eval("document."+pform+"."+yearfield+".value");
	m=stripZeros(m);
	rewriteDay(parseInt(y),parseInt(m),pform,dayfield);
}
function cmpDate(pform,pmonth,yearfield,dayfield,pmonth1,yearfield1,dayfield1)
{
	m=eval("document."+pform+"."+pmonth+".value");
	y=eval("document."+pform+"."+yearfield+".value");
	d=eval("document."+pform+"."+dayfield+".value");
	if(m<10) m="0"+m;
	date1=y+m+d;
	m1=eval("document."+pform+"."+pmonth1+".value");
	y1=eval("document."+pform+"."+yearfield1+".value");
	d1=eval("document."+pform+"."+dayfield1+".value");
	date2=y1+m1+d1;
	if(date1>=date2)
	{
		return false;
	}else{
		return true;
	}
}
// parameter: Jahr, Monat (als nummer von 1-12), name des formulars, name des Feldes wo die tage geschrieben werden sollen
function rewriteDay(y,m,pform,dayField)
{
	var la=new Date();
	var mdays=Array(31,0,31,30,31,30,31,31,30,31,30,31);
	if(m==2)
	{
		maxdays=daysInFebruary(y);
	}else{
		maxdays=mdays[m-1];
	}
	eval("document."+pform+"."+dayField+".length=0");
   for(i=1;i<=maxdays;i++)
   {
	  if(i<10)
	  {
		  i="0"+i;
	  }
          NeuerEintrag = new Option(i,i,false,false);
          eval("document."+pform+"."+dayField+".options[document."+pform+"."+dayField+".length] = NeuerEintrag");
   }
}

function getIndex(formname,fieldname,wantedVal)
{
 for(i=0;i<eval('document.'+formname+'.'+fieldname+'.length');++i)
  if(eval('document.'+formname+'.'+fieldname+'.value') == wantedVal)
   return i;
}

function stripZeros(inputStr)
{
	var result = inputStr;
	try
	{
		while (result.substring(0,1) == "0")
		{
			result = result.substring(1,result.length);
		}
	}
	catch(E)
{}
return result;
}