Its a very weird requirement. I wonder why you might want to do that.
Anyways you may try putting the textbox in a DIV tag. Ex :-
<DIV id="ROHIT" name="ISGREAT" style="position:relative;left: 0px;">
<input type="textbox" name="mera_wala_textbox"
></DIV>
You can find the location of the Div tag postion in some javascript function.
function jhakaas_Function()
{
var tabObj1 = document.getElementById("ROHIT");
// this the position of your textbox shown in alert
alert(tabObj1.style.left);
//alert("Say thanx to Rohit");
}
hope this helps ;-)
Regards
Rohit Kumar