Mouseover/out effekt

Hej

Jeg har lavet en hotspot der åbner en popup ved mouseover. Det går også fint men jeg kan ikke finde ud af at lukke filen onmouseout.

Er der nogen der kan hjælpe mig?

Koden ses neden under.

/Leahcim

<area shape="poly" coords="27,337,23,297,27,252,31,192,45,160,59,153,79,148,94,147,105,141,115,130,116,109,130,88,134,77,154,76,167,81,174,90,174,111,165,139,155,154,166,162,182,176,184,192,184,210,181,233,179,256,180,277,177,295,180,319,178,323,167,332,173,343,180,356,184,371,31,371" href="#" alt="Calus Stilhoff" onMouseOver="MM_openBrWindow('claus_stillhoff.htm','Claus','width=650,height=200')">