function mapa() 
{ window.open("http://www.mapy.cz/gethtml.py?&lo=57064504&la=180807424&z=0&w=600&h=400&js&zoom&navig&scale&sz=&ilo=57064504&ila=180807424","nove","left=25,top=25,width=600,height=400,scrollbars=no,resizable=yes") 
};

function blank (desktopURL,w,h)
{ var foo = window.open( desktopURL, "_blank", "toolbar=no,location=no,status=no,menubar=no,scrollbars=no,left=25,top=25,width="+(w+20)+",height="+(h+20) );
};