copyright=new Date();
update = copyright.getFullYear();

//---write copyright
document.write("Copyright &copy 2006-"+update+" by <a  onclick='shake(2);' href='mailto:drdonze@gmail.com?subject=Relativity Calculator Inquiry&body=Dear Sirs,' onfocus='if(this.blur)this.blur();'><img src='images/mailto_a.gif' alt='mail to' height='10' width='14' border='0'>&nbsp;BlueMax Productions</a> ");



<!--// shake
function shake(n,page,q) {
if (n>1) {var q=10;} else {var q=3;}
if (self.moveBy) {
for (i=q; 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);
  }
 }
}
if (page) {location.href=page;}
}
// end JavaScript -->