// © City Business Logic, 2002-2003 - All Rights Reserved
// You may use this script in your own, non-competing
// projects on the condition that you leave this message in tact.

function enterField(f1)
{
   if (f1 && f1.style)
   {
     f1.style.background='#FEFDE0';
   }
}

function exitField(f1)
{
   if (f1 && f1.style)
   {
     f1.style.background='#FFFFFF'
   }
}

function ValidateDate(f1,f2,f3)
{
   if (!f1)
   {
       return true;
   }
   if (f1.type=='hidden')
   {
       return true;
   }
   currentError=document.getElementById('currentError');
   if (!currentError)
   {
       exitField(f1);
       return true;
   }
   if ((f3==0) & (f1.value.length==0))
   {
     exitField(f1);
     return true;
   }
   if (currentError.value!='')
   {
      if (currentError.value!=f1.name)
      {
         exitField(f1);
         return true;
      }
   }

   if (f1.value.length<8)
   {
      alert('Please enter date/time in format');
      currentError.value=f1.name;
      f1.focus();
      f1.select();
      return false;
   }

   if (f2==1)
   {
      var dd=f1.value.substring(0,2);
      var mm=f1.value.substring(2,4);
      var yy=f1.value.substring(4,8);
   }
   else if (f2==0)
   {
      var mm=f1.value.substring(0,2);
      var dd=f1.value.substring(2,4);
      var yy=f1.value.substring(4,8);
   }
   else if (f2==2)
   {
      var yy=f1.value.substring(0,4);
      var mm=f1.value.substring(4,6);
      var dd=f1.value.substring(6,8);
   }

   if (dd>31)
   {
      alert('Day value must not be larger than 31!');
      currentError.value=f1.name;
      f1.focus();
      f1.select();
      return false;
   }
   if (mm>12)
   {
      alert('Month must not be larger than 12!');
      currentError.value=f1.name;
      f1.focus();
      f1.select();
      return false;
   }
   if (dd==31)
   {
      if (mm==4||mm==6||mm==9||mm==11)
      {
         alert('There is no 31st in Month '+mm);
         currentError.value=f1.name;
         f1.focus();
         f1.select();
         return false;
      }
   }
   if (mm==2)
   {
      if (dd>29)
      {
         alert('There are not '+dd+' days in February!');
         currentError.value=f1.name;
         f1.focus();
         f1.select();
         return false;
      }
      if (dd==29)
      {
         if (yy%4!=0)
         {
            alert('There are not 29 days in February of that year!!');
            currentError.value=f1.name;
            f1.focus();
            f1.select();
            return false;
         }
      }
   }
   exitField(f1);
   currentError.value='';
   return true;
}


<!--end:Script-->