function Warn_Alert(title, text, button){

  alert( text );

}



function Check(FORM, FIELD, VALUE, NOT_NULL) {
  var field_length = document[FORM][FIELD].value.length;
  
  if ( ( field_length > 0 || NOT_NULL == 1) && field_length < VALUE ) {
    Warn_Alert(""," "+ VALUE +" ","ok");
    document[FORM][FIELD].focus();
  } else {
    document[FORM].submit();
  }
}



  function trim(FORM, FIELD) {
    var whitespace = " \t\n\r";

    var s = document[FORM][FIELD].value;
    var a = 0;
    var b = s.length;

    while ((a < b) && (whitespace.indexOf(s.charAt(a)) != -1))
      a++;

    while ((a < b) && (whitespace.indexOf(s.charAt(b)) != -1))
      b--;

    s = s.substring( a, b+1 );
    document[FORM][FIELD].value = s;

    return;
  }



function Check_Empty(form, field){
	var tmp;
        tmp = document[form][field].value;
        while(tmp.length && tmp.charAt(0) == ' ')
                tmp = tmp.substring(1, tmp.length);
        while(tmp.length && tmp.charAt(tmp.length - 1) == ' ')
                tmp = tmp.substring(0, tmp.length - 1);

        document[form][field].value = tmp;
        if(!document[form][field].value.length){
                return 1;
        }
        return 0;
}



  function selection_selected( FORM, FIELD )
  {
    var radio = document[FORM][FIELD];
    for (var i = 0; i < radio.length; i++) {   
      if (radio[i].checked) { 
        return i;
      }
    }
    return -1;
  }