var scrtxt = "welcome to www.nbks.com";
var l = scrtxt.length;
var width = 140;
var pos = 1 - width;
function scroll()
{
pos++;
var scroller = "";
if(pos==l) pos = 1 - width;
if(pos<0)
{ 
for(i=1; i<=Math.abs(pos); i++) scroller = scroller + " ";
scroller = scroller + scrtxt.substring(0, width-i+1);
}
else
{
scroller = scroller + scrtxt.substring(pos, width + pos);
}
window.status=scroller;
setTimeout("scroll()", 120);
}
scroll();