function trim(chars) {
 while(chars.charAt(0)==' ') {
   chars=chars.substring(1);
 }
 while(chars.charAt(chars.length - 1)==' ') {
   chars=chars.substring(0,chars.length - 1);
 }
 return chars;
}

function setFocus(field) {
	if (field.focus) {
		field.focus(); 
	}
	if (field.select) {
		field.select();
	}
}

function getElement(elemID) {
  var obj
  if (document.all) {
    obj = document.all(elemID);
  } else if (document.getElementById) {
    obj = document.getElementById(elemID);
  } else if (document.layers) {
    obj = document.layers[elemID];
  }
  return obj;
}

function selectAdd(select, option, position) {
  if (isIE()) {
    select.options.add(option, position);
  } else {
    select.add(option, select.options[position]);
  }
}

function isIE() {
  return (navigator.appName == "Microsoft Internet Explorer");
}

function submitForm(form, url) {
	form.action=url;
	form.submit();
}