Hacer que la pestaña se mueva

< script>
var repeat=0 //enter 0 to not repeat scrolling after 1 run, othersise, enter 1
var title=document.title
var leng=title.length
var start=1
function titlemove() {
titl=title.substring(start, leng) + title.substring(0, start)
document.title=titl
start++
if (start==leng+1) {
start=0
if (repeat==-1)
return
}
setTimeout("titlemove()",140)
}
if (document.title)
titlemove()
< /script>