To refresh a form keeping its field values as is:
http://authorsloft.com/SupportRef.nsf/e6b464faa52c14d1852567d90082c48f/1c05fb75304ce7a685256b710005fb38!OpenDocument
Copied the content from the above link:
Domino form / document refresh using JavaScript:
Better Option (Domino6 + ):
if(ValidationFunc()==true) {
return _doClick('$Refresh', this, null);
}
A longer version to specify a frame and what field to base refresh on:
return _doClick('$Refresh', this, '_self', '#_RefreshKW_' + 'somefieldname' );
