function isEmailAddress (string) {
  var addressPattern = 
    /^\w+((-\w+)|(\.\w+))*\@[A-Za-z0-9]+((\.|-)[A-Za-z0-9]+)*\.[A-Za-z0-9]+$/;
  return addressPattern.test(string);
}

function isTelOrMobile(string){
   var pattern = /^06-[1-9][0-9]{7}|0[1-9][0-9]-[1-9][0-9]{6}|[01-9][0-9]{2}-[1-9][0-9]{5}$/;
    return pattern.test(string);
}

function isTel (string) {
  var addressPattern = 
  /^([0]\d{2}(-|\s)[1-9]\d{6})|([0]\d{3}(-|\s)[1-9]\d{5})|([0]\d{9})$/;
  return addressPattern.test(string);
}


function isMobile (string) {
  var addressPattern = 
    /^06(-{0,1})[1-9][0-9]{7}$/;
  return addressPattern.test(string);
}


function isTijd (string) {
  var addressPattern = 
     /^([01]?[0-9]|[2][0-3]):[0-5][0-9]$/;
  return addressPattern.test(string);
}

function isNum (string) {
    var ValidChars = "0123456789.";
   var IsNumber=true;
   var Char;
 
   for (i = 0; i < string.length && IsNumber == true; i++) 
      { 
      Char = string.charAt(i); 
      if (ValidChars.indexOf(Char) == -1) 
         {
         IsNumber = false;
         }
      }
   return IsNumber;
}

function chkage(obj, format) {
 t    = new Date();	// get current date 
 year = t.getFullYear();	// get year of current
 mon  = t.getMonth() + 1;	// get month of current
 day  = t.getDate();	// get date of current
 
  dateBits = DateComponents(obj.value, format);
  DD = dateBits[0];
  MM = dateBits[1];
  YY = dateBits[2];
 
  age = year - YY;
  if ((MM > mon) || (MM == mon && day < DD)) age --;
   return age;
}

function ValiDate(obj, format){
   dateBits = DateComponents(obj.value, format);
   
   if (dateBits == null) return false;

   day = dateBits[0];
   month = dateBits[1];
   year = dateBits[2];

   if ((month < 1 || month > 12) || (day < 1 || day > 31)) { // check month range 
        return false;
   } 
   
   if ((month==4 || month==6 || month==9 || month==11) && day==31) {
        return false;
   }
	      
   if (month == 2) {
	testyear = year;
       // check for february 29th 
       if(year < 20){
       	testyear = 20 + year;
   }else if(year<100){
      	testyear = 19 + year;
   }	       
   var isleap = (testyear % 4 == 0 && (testyear % 100 != 0 || testyear % 400 == 0)); 
       if (day>29 || (day==29 && !isleap)) {
           return false;
          }
       } 
	   
   return true;
}

function DateComponents(dateStr, morfat) {
  var splitChar = (morfat.indexOf('-')>0?'-':(morfat.indexOf('/')>0?'/':(morfat.indexOf('.')>0?'.':'')));
  var morfatArr = morfat.split(splitChar);
  var dateArr = dateStr.split(splitChar);
  var retArr = new Array(morfatArr.length);  
    
  if(dateArr.length == morfatArr.length){
	  for(i=0;i<morfatArr.length;i++){
		if(morfatArr[i]=="dd" && dateArr[i]<=31){			
			retArr[0] = dateArr[i];
		}else if(morfatArr[i]=="mm" && dateArr[i]<=12){
			retArr[1] = dateArr[i];
		}else if(morfatArr[i]=="yyyy" && dateArr[i]<3000 && dateArr[i]>999){
			retArr[2] = dateArr[i];
		}else if(morfatArr[i]=="yy" && dateArr[i]<100 && dateArr[i]>=0){
			retArr[2] = dateArr[i];
		}else{
			return null;
		}
	  }	  
	  return retArr;
  }else{
    return null;
  }
}


function submitOpenDagAanmelding() {
  var submitdata = true;
  var errorstr = "";
  
  errorstr = "Alle Felder sind Pflichtangaben:\n";

     if (!isEmailAddress(document.opendagAanmelden.email.value))
     {
       errorstr = errorstr + "\n" + "  - E-Mail";
       submitdata = false;
     }

  	if ( (document.opendagAanmelden.companyname.value.length==0))
     {
       errorstr = errorstr + "\n" + "  - Firma";
       submitdata = false;
     }
	 
	 if ( ( document.opendagAanmelden.gender[0].checked!=1 ) &&
       ( document.opendagAanmelden.gender[1].checked!=1 ))
     {
       errorstr = errorstr + "\n" + "  - Anrede";
       submitdata = false;
     }  

	 if ( (document.opendagAanmelden.firstname.value.length==0))
     {
       errorstr = errorstr + "\n" + "  - Vorname";
       submitdata = false;
     }

	 if ( (document.opendagAanmelden.lastname.value.length==0))
     {
       errorstr = errorstr + "\n" + "  - Nachname";
       submitdata = false;
     }	 
	 	 
	  if (document.opendagAanmelden.birthdate.value.length!=10)
     {
       errorstr = errorstr + "\n" + "  - Geburtsdatum (TT-MM-JJJJ)";
       submitdata = false;
     }
	 
     if ( ( document.opendagAanmelden.branche.selectedIndex==0 ) && (document.opendagAanmelden.branche_different.value.length==0) )
     {
       errorstr = errorstr + "\n" + "  - Branche";
       submitdata = false;
     }  

	 if ( (document.opendagAanmelden.street.value.length==0))
     {
       errorstr = errorstr + "\n" + "  - Straße";
       submitdata = false;
     }

	 if ( (document.opendagAanmelden.number.value.length==0))
     {
       errorstr = errorstr + "\n" + "  - Hausnummer";
       submitdata = false;
     }

	 if ( (document.opendagAanmelden.zipcode.value.length==0))
     {
       errorstr = errorstr + "\n" + "  - PLZ";
       submitdata = false;
     }
	 
	 if ( (document.opendagAanmelden.city.value.length==0))
     {
       errorstr = errorstr + "\n" + "  - Ort";
       submitdata = false;
     }
	 
	 if ( (document.opendagAanmelden.telephone.value.length==0))
     {
       errorstr = errorstr + "\n" + "  - Telefonnummer";
       submitdata = false;
     }
	 
	 if ( (document.opendagAanmelden.number_of_persons.value.length==0))
     {
       errorstr = errorstr + "\n" + "  - Teilnehmerzahl";
       submitdata = false;
     }
	 
	 
 if (submitdata==true)
   {
     document.opendagAanmelden.action="ecb_group_opendag_submit.php";
     document.opendagAanmelden.submit();
   }
   else
   {
     alert(errorstr);
     return false;
   }
   
}