Сортировка списка и таблицы с помощью javascript(js)

Код сортировки списка:
<a onclick=sorrtab()>Sort_АЯ</a> | <a onclick=sorrtz()>Sort_ЯА</a><br><br>
<div id='ul11'>
<li>Сортировка
<li>Случайных
<li>Данных
<li>javascript
</div>

<script>
var myar100 = new Array();
var li1=document.getElementById('ul11').getElementsByTagName('li');
document.getElementById('ul11').style.fontsize='14px';
function sorrtab() {

for(var li2=0;li2<li1.length;li2++) {
myar100[li2]=li1[li2].innerHTML;
}
myar100.sort();
for(var li3=0;li3<li1.length;li3++) {
li1[li3].innerHTML=myar100[li3];

}
}

function sorrtz() {

//var li1=document.getElementsByTagName('li');
for(var li2=0;li2<li1.length;li2++) {
myar100[li2]=li1[li2].innerHTML;
}
myar100.sort();
myar100.reverse();
for(var li3=0;li3<li1.length;li3++) {
li1[li3].innerHTML=myar100[li3];
}
}
</script>

код сортировки таблицы
<a onclick=sorrta(0)>Sort_1</a> | <a onclick=sorrta(1)>Sort_2</a> | <a onclick=sorrta(2)>Sort_3</a>
<table id=tab1 border=1>
<tr><td width=100>Вася</td><td width=100>Иванов</td><td width=30>12</td></tr>
<tr><td>Петя</td><td width=100>Васильев</td><td>122</td></tr>
<tr><td>Наташа</td><td width=100>Голубева</td><td>31</td></tr>
<tr><td>Ира</td><td width=100>Трунова</td><td>2</td></tr>
</table>
<div id=div1></div>

<script>
var myar= new Array();

function sorrta(a1) {
var li1=document.getElementById('tab1').getElementsByTagName('tr');
var li2=li1[0].getElementsByTagName('td');
var ctr=li1.length;
var ctd=li2.length;
for(var i=0;i<ctr;i++) {
myar[i]="";
for(var i2=0;i2<ctd;i2++) {
myar[i]+=document.getElementById('tab1').getElementsByTagName('tr')[i].getElementsByTagName('td')[i2].innerHTML+"@@";
}
var zz=myar[i];
var dth=decToHex(zz.split('@@')[a1]);
if(dth!='NaN') {
if(dth.length==1) {dth="00"+dth;}
if(dth.length==2) {dth="0"+dth;}
myar[i]=dth+"@@"+myar[i];
} else {
myar[i]=myar[i].split('@@')[a1]+"@@"+myar[i];
}
}
myar.sort();
for(var i=0;i<ctr;i++) {
for(var i2=1;i2<(ctd+1);i2++) {
document.getElementById('tab1').getElementsByTagName('tr')[i].getElementsByTagName('td')[i2-1].innerHTML=myar[i].split('@@')[i2];
}
}
}

function decToHex(n) { return Number(n).toString(36); }
function hexTodec(hex) { return parseInt(hex,36); }

</script>