What Is The Bext Way To Scroll Through Elemtns In My Page Checknig The Id Attribute

I am trying to scroll through all elements in my page testing each element for a particular id I have set a <td> tage :

<td id="myvalue">blah</td>

does anyone have any JS I can use to scroll through elements checknig the id attribute???

can I wrap the <td> in a <form> and use :

<code>
numelements = document.form1.elements.length;
for (var j=0; (j < numelements); j++)
if (document.form1.elements[j].id == "saletotal") {
alert("INSALETOTAL");
strsumsaletotal = document.form1.elements[j].text;
break;
}
</code>