A better javascript object enumeration function (sorting, table formatting)

function COSEnumerateObjectFunctions(obj){

var emailStr = "<table>";
var objarray = new Array();
var counter = 0;

for(var propertyName in obj) {
objarray[counter] = new Array(2);
objarray[counter][0] = propertyName;
objarray[counter][1] = obj[propertyName];
counter = counter + 1;
}

objarray.sort(function(a,b){  
   return a < b ? -1 : a > b ? 1 : 0;
});

for(var i = 0; i < counter; i++) {
if(i % 3 == 0){
emailStr = emailStr + '<tr><td><u><b>' + objarray[i][0] + '</b></u></td><td><u><b>' +  objarray[i][1] + '</b></u></td></tr>';
}else{
emailStr = emailStr + '<tr><td>' + objarray[i][0] + '</td><td>' +  objarray[i][1] + '</td></tr>';
}

}

emailStr = emailStr + '</table>';
aa.sendMail("wadmin@springfieldcityhall.com","jmurgolo@springfieldcityhall.com","","enumerated object 2", emailStr);

return emailStr;
}