// Display error message if required fields are blank or too long. 

function isBlank(s,errString)
{
  var len=s.length
  var i
  for(i=0;i<len;++i)
  {
    if(s.charAt(i)!=" ")
      return false
  }
  alert("The Zip Code field is empty!\nPlease enter a value for this field.")
  return true
}

function isBlanknomsg(s)
{
  var len=s.length
  var i
  for(i=0;i<len;++i)
  {
    if(s.charAt(i)!=" ")
      return false
  }
  return true
}
function chkLen(s,inLen,errString) 
{
  var len=s.length
  if(len>inLen)
  {
    alert("The "+errString+" field is too long!\nThe max size is "+inLen+" and you have "+len+".\nPlease shorten this field.")
    return true
  }
  return false
}
function chkSLen(s,inLen,errString) 
{
  var len=s.length
  if(len<inLen)
  {
    alert("The "+errString+" field is too short!\nThe min size is 5 and you have "+len+".\nPlease lengthen this field.")
    return true
  }
  return false
}
function checkInput(s)
{
  {
    document.forms[0].unqzip.value=""
    document.forms[0].unqzip.value="byNum"
  }
}      
function processForm()
{
  if(isBlanknomsg(document.forms[0].strno.value))
  {
  alert("Please Enter a Street Number.")
  document.forms[0].strno.focus()
  return false
  }
  if(isBlanknomsg(document.forms[0].strname.value))
  {
  alert("Please Enter a Street Name.")
  document.forms[0].strname.focus()
  return false    
  }
  if(isBlanknomsg(document.forms[0].strno.value))
  {
    alert("Please Enter a Street Number.")
    document.forms[0].strno.focus()
    return false
  }
  if(isBlanknomsg(document.forms[0].strname.value))
  {
    alert("Please Enter a Street Name.")
    document.forms[0].strname.focus()
    return false    
  }
  if(!isBlanknomsg(document.forms[0].strno.value))
  {
    if(isNaN(document.forms[0].strno.value))
    {
      alert("No characters allowed in the Street Number field.  Please enter a number.")
      document.forms[0].strno.value = ""
      document.forms[0].strno.focus()
      return false
    }
    return true
  }
  return false
}
 
function processFormpo()
{
  if(isBlanknomsg(document.forms[0].poboxzip.value))
  {
    alert("Please Enter a PO Box Zip Code.")
    document.forms[0].poboxzip.focus()
    return false
  }
  if(!isBlanknomsg(document.forms[0].poboxzip.value))
  {
    if(isNaN(document.forms[0].poboxzip.value))
    {
      alert("No characters allowed in the PO Box Zip Code field.  Please enter a number.")
      document.forms[0].poboxzip.value = ""
      document.forms[0].poboxzip.focus()
      return false
    }
    return true
  }
  return false
}