sort

		var arr = [1, 2, 3, 4, 5, 6, 7,8,9,10,11,12,13,14,15,16];
		var ver = [5, 3, 9, 6, 8, 2, 4];
		document.writeln(arr + "<br/>	");   
		
		var l = 0, r = 1;

		while (r < arr.length) {
			 
			if (isEven(l) && isOdd(r)) {
				swap(l, r);
				l++; r++;
			} else if (isEven(l)) {
				swap(l, r);
				r++;
			} else if (isOdd(l) && isOdd(r)) {
				l++;
			} else if (isOdd(l)) {
				l++; 
			}
		}
		//document.writeln(arr);
		

		function isOdd(i)
		{
			return arr[i] % 2 == 1;
		}
		function isEven(i)
		{
			return arr[i] % 2 == 0;
		}
		function swap(i, j)
		{
			var t = arr[i];
			arr[i] = arr[j];
			arr[j] = t;
			document.writeln(arr + "<br/>	");   
		}