Code:
function abc()
{
	var tstr1 = new Array();
	var vari=50;
	var htmlText  ='';

		for(var i=0; i<vari; i++)
		{
			tstr1.push(["a" + i, "second value" + i]);
		}

					tstr1.sort(function(a, b) 
								{	//sorting first value in alphabetical order and the associated value
								  return a[0] < b[0]
									? -1
...