help with jscript code

can anyone please tell me what this bit of code does? thanks!

<!--
function MM_reloadPage(init) { //reloads the window if Nav4 resized
if (init==true) with (navigator) {if ((appName=="Netscape")&&(parseInt(appVersion)==4)) {
document.MM_pgW=innerWidth; document.MM_pgH=innerHeight; onresize=MM_reloadPage; }}
else if (innerWidth!=document.MM_pgW || innerHeight!=document.MM_pgH) location.reload();
}
MM_reloadPage(true);
//-->

It reloads the current page if the browser (Netscape Navigator 4) window is resized.

so it's really not necessary??

yeah its just another piece of random useless code dreamweaver produces.

question: what is the point of reloading the page if the window is resized?

Its a work around for a bug in the way Nav 4 handles layers. When you resize the browser window in Nav 4 it tends mess up the position of layers. Reloading the page helps to maintain the correct positioning.

So its not useless, although according to the stats from a few of my sites only 2% of visitors still use the Nav 4 browser.

yeah i was about to say, i guess it's a good thing they're up to netscape 8 then...