Array.prototype.remove = function(element) {
	for (var i = 0, n = 0; i < this.length; i++) {
		if (this[i] != element) {
			this[n++] = this[i];
		}
	}
	if (n < i)
		this.length -= 1;
};

Array.prototype.contains = function(element) {
	for (var i = 0; i < this.length; i++) {
		if (this[i] == element) {
			return true;
		}
	}
	return false;
};

Array.prototype.indexOfObj = function(objKey, objVal) {
	if (!objKey)
		return -1;

	for (var i = 0; i < this.length; i++) {
		var _obj = this[i];
		if (typeof _obj == 'object' && _obj["" + objKey + ""] == objVal) {
			return i;
		}
	}

	return -1;
};

Array.prototype.getObjElements = function(objKey, objVal) {
	var _elements = [];
	if (!objKey)
		return 'undefined';

	for (var i = 0; i < this.length; i++) {
		var _obj = this[i];
		if (typeof _obj == 'object' && _obj["" + objKey + ""] == objVal) {
			_elements.push(_obj);
		}
	}

	return _elements;
};

String.escape = function(A) {
	return A.replace(/('|\\)/g, "\\$1");
};

String.leftPad = function(D, B, C) {
	var A = new String(D);
	if (C === null || C === undefined || C === "") {
		C = " ";
	}
	while (A.length < B) {
		A = C + A;
	}
	return A;
};

String.format = function(B) {
	var A = Array.prototype.slice.call(arguments, 1);
	return B.replace(/\{(\d+)\}/g, function(C, D) {
				return A[D];
			});
};

String.prototype.toggle = function(B, A) {
	return this == B ? A : B;
};

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

String.prototype.endWith = function (str) {
	var _allLen = this.length;
	var _strLen = str.length;
	var _subLen = this.lastIndexOf(str);
	if (_allLen == (_subLen + _strLen)) {
		return true;
	}
	return false;
};

String.prototype.startWith = function(str){
	if(str == null || str == "" || this.length == 0 || str.length > this.length) {
		return false;
	}
	if(this.substr(0,str.length) == str) {
		return true;
	}
	
	return false;
};


//remove comma from number string
String.prototype.rawNum = function(){
  return this.replace(/,/g,"");
};

//extend window.showModalDialog
var _smd = window.showModalDialog;
window.showModalDialog = function(sURL, vArguments, sFeatures){
	var rv = _smd(sURL, vArguments, sFeatures);
	if(typeof rv == "undefined" || typeof rv.errorFlag == "undefined"){
		return rv;
	} else {
		if (typeof window.dialogArguments == "undefined") {
			window.top.location.href = "userlogout.action";
		} else {
			var _rv = new Object();
			_rv.errorFlag = true;
			window.returnValue = _rv;
			window.close();
		}
	}
};