function clearDefault(el) {
  if (el.defaultValue==el.value) el.value = "";
}

var win = null;
function newWin(mypage, myname) {
	var w = 800;
	var h = 550;
  	var winl = (screen.width-w)/2;
	var wint = (screen.height-h)/2;
 	if (winl < 0) winl = 0;
  	if (wint < 0) wint = 0;
  	var settings = 'height=' + h + ',';
 	settings += 'width=' + w + ',';
  	settings += 'top=' + wint + ',';
  	settings += 'left=' + winl + ',';
  	settings += 'width,height,toolbar=no,location=no,directories=no,status=no,menubar=yes,scrollbars=yes,copyhistory=no,resizable=yes,width=800, height=550';
  	win = window.open(mypage, myname, settings);
  	win.window.focus();
}