/*
Common javascript functions to be used
*/


//Display the element
setElementDisplay = function(eleId, disp) {
	var ele = document.getElementById(eleId);
	if (ele != null) ele.style.display = disp;
}

trim = function(str, charlist) {
  var whitespace;
  if(!charlist){
      whitespace = ' \n\r\t\f\x0b\xa0\u2000\u2001\u2002\u2003\u2004\u2005\u2006\u2007\u2008\u2009\u200a\u200b\u2028\u2029\u3000';
  } else{
      whitespace = charlist.replace(/([\[\]\(\)\.\?\/\*\{\}\+\$\^\:])/g, '\$1');
  }
  
  for (var i = 0; i < str.length; i++) {
    if (whitespace.indexOf(str.charAt(i)) === -1) {
    str = str.substring(i);
    break;
    }
  }
  for (i = str.length - 1; i >= 0; i--) {
    if (whitespace.indexOf(str.charAt(i)) === -1) {
      str = str.substring(0, i + 1);
      break;
      }
  }
  return whitespace.indexOf(str.charAt(0)) === -1 ? str : '';
}