var win=window;

function OpenWinWHS(url,w,h,sc){
if ((win == window) || win.closed) {
settings ='width='+w+',height='+h+',scrollbars='+sc+',resizable=yes,menubar=no,location=no,toolbar=no,status=no';
win=window.open(url,"Wexplanation",settings);
} else {
win.location.replace(url);
win.focus();
}
}