function show2DArrElements(array) {
	for (var i = 0; i < array.length; i++) {
		for (var j = 0; j < array[i].length; j++) {
			console.log(array[i][j]);
		}
	}
}


function create2DArray(rows, columns) {

	var arr = [];

	for (var i = 0; i < rows; i++) {
		arr[i] = [];
		for (var j = 0; j < columns; j++) {
			arr[i][j] = j + i * columns;
		}

	}
	console.log(arr);
}

create2DArray(5, 15);