Sorting two dimentional array and displaying result

[codehelp55]

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
									: a[0] == b[0]
									  ? 0
									  : 1
									;
								}
							);


					for(var t=0; t<tstr1.length; t++)
					{
						//creating html to display value1 and value 2
						htmlText = htmlText + "<li>" + tstr1[t][0] +"----------" + tstr1[t][1] +"</li>";
					}
					htmlText = "<ul>" + htmlText + "</ul>";
					document.write(htmlText);
					
}

[Dormilich]

and what exactly is the problem?