/**
 * String functions
 */

/**
* URLEncode - because JavaScript's escape() is
* incompatible with PHP's urldecode().
* @param {String} clearString
*/
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;
}

String.prototype.trim = function() {
	return this.replace(/^\s+|\s+$/g,"");
}