function controlNum(frmInput)
{
  var len = frmInput.value.length;
  str = frmInput.value;
  var i = 0;
  var ch = " ";
  var strChanged = "";
  while(i<len) 
       {
	  ch = str.charAt(i);
	  if ((ch >= "0") && (ch <= "9"))
	     {
               strChanged = strChanged + ch;
	     }
             else
             {
	     }
	  i++;
	}
  frmInput.value = strChanged;
}

function controlChar(frmInput)
{
  var len = frmInput.value.length;
  str = frmInput.value;
  var i = 0;
  var ch = " ";
  var strChanged = "";
  while(i<len) 
       {
	  ch = str.charAt(i);
	  if ((ch==" ") || ((ch >= "A") || (ch >= "a")) && ((ch <= "Z") || (ch <= "zz") || (ch=="Ç")  || (ch=="ç") || (ch=="Þ") || (ch=="þ")  || (ch=="ð") || (ch=="Ð") || (ch=="ü") || (ch=="Ü") || (ch=="ö") || (ch=="Ö") || (ch=="ý") || (ch=="Ý")))
	     {
               strChanged = strChanged + ch;
	       do
                 {
                    posBlank = strChanged.indexOf("  ");
                    strChanged = strChanged.replace("  ", " ");
                 }
               while (!posBlank== -1);
	     }
             else
             {
	     }
	  i++;
	}
  if (strChanged == " ")
     {
        strChanged = ""
     }
  frmInput.value = strChanged;
}