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?