function ApriFin(str) { 

larg=840; 
alt=820; 

toptop=(screen.height/2)-(alt/2); 
leftleft=(screen.width/2)-(larg/2); 


searchWin = window.open(str,'','top='+toptop+',left='+leftleft+',width='+larg+',height='+alt+',alwaysRaised=no,scrollbars=yes,status=no,z-lock=no,location=no,toolbar=no'); 

}