Auto Scrolling the Text Content

Call this function on the button click or other controls
//To auto scroll textbox

function autoScroll()
{ //alert("Auto ");
var d=document;
var ta, rng;
if(d.all){
ta=d.all["txtResult"];
if(ta && ta.createTextRange)
{
rng=ta.createTextRange();
//alert(rng);
rng.collapse(false);
rng.select();
}
}
}