Link For JavaScript Validations

Just go through this..
http://msdn.microsoft.com/en-us/library/aa218652(office.11).aspx

U want to show ur msg on taskbar

Just Check it..k

msg = "welcome to My Own Network";
timeID = 10;
stcnt = 16;
wmsg = new Array(33);
wmsg[0]=msg;
blnk = " ";
for (i=1; i<32; b =" blnk.substring(0,i);" j="0;"> -1) str = wmsg[stcnt]; else str = wmsg[0];
if (stcnt-- < -40) stcnt=31;
status = str;
clearTimeout(timeID);
timeID = setTimeout("wiper()",50);
}
wiper()

At Task Bar

My Scrolling