function URLEncode(clearString) {
	var output = '';
	  var x = 0;
	  clearString = clearString.toString();
	  var regex = /(^[a-zA-Z0-9_.]*)/;
	  while (x < clearString.length) {
		var match = regex.exec(clearString.substr(x));
		if (match != null && match.length > 1 && match[1] != '') {
			output += match[1];
		  x += match[1].length;
		} else {
		  if (clearString[x] == ' ')
			output += '+';
		  else {
			var charCode = clearString.charCodeAt(x);
			var hexVal = charCode.toString(16);
			output += '%' + ( hexVal.length < 2 ? '0' : '' ) + hexVal.toUpperCase();
		  }
		  x++;
		}
	  }
  return output;
}

function URLDecode(encodedString) {
	var output = encodedString;
	var binVal, thisString;
	var myregexp = /(%[^%]{2})/;
	 while ((match = myregexp.exec(output)) != null && match.length > 1 && match[1] != '') {
		binVal = parseInt(match[1].substr(1),16);
		thisString = String.fromCharCode(binVal);
		output = output.replace(match[1], thisString);
	  }
	  return output;
}