Copy the following code into the BODY of your html page.

<SCRIPT language=JavaScript1.2> <!-- /*Get the best java scripts at http://sites.move.to */ function shakem(n) { if (self.moveBy) { for (i = 15; i > 0; i--) { for (j = n; j > 0; j--) { self.moveBy(0,i); self.moveBy(i,0); self.moveBy(0,-i); self.moveBy(-i,0); } } } } // End --> </SCRIPT> <SCRIPT language=JavaScript1.2> <!-- function shakef(n) { if (self.moveBy) { for (i = 30; i > 0; i--) { for (j = n; j > 0; j--) { self.moveBy(0,i); self.moveBy(i,0); self.moveBy(0,-i); self.moveBy(-i,0); } } } } // End --> </SCRIPT> <center> <form> <input onclick=shakem(3) type=button value="Start Earthquake"> </form> </center>