function TrimString(frmObj) {
var sInString = frmObj.value;
  sInString = sInString.replace( /^\s+/g, "" );// strip leading
  sInString = sInString.replace( /\s+$/g, "" );// strip trailing
  frmObj.value = sInString;
}

function validate()
{
if(document.form1.username.value.length < 3)
{
	alert("User name must contain minimum 3 characters");
	document.form1.username.focus();
	return false;
}

return true;
}