(function ($) {

	Array.prototype.exists = function(prop, value) {
		if (!value) {
			value = prop;
			prop = null;
		}
		
		for (var i = 0; i < this.length; i++) {
			var line = this[i];
			line = this[i].record ? this[i].record : this[i];
			
			if (prop) {
				if (line[prop] == value) {
					return true;
				}
			}
			else {
				if (line == value) {
					return true;
				}
			}
		}
		
		return false;
	};
	
	Array.prototype.getItem = function(prop, value) {
		if (!value) {
			value = prop;
			prop = null;
		}
		
		for (var i = 0; i < this.length; i++) {
			var line = this[i];
			line = this[i].record ? this[i].record : this[i];
			
			if (prop) {
				if (line[prop] == value) {
					return line;
				}
			}
			else {
				if (line == value) {
					return line;
				}
			}
		}
		
		return null;
	};	


})(jQuery);