Script DHTML Java no Netscape 7 (LINUX)

O meu problema é com os dois browsers que tenho instalados, uso primeiramente o Netscape 7, sei que o Netscape não reconhece comando "document", será que alguém conheçe o funcionamento do browser para me falar como corrigir este script (adaptar) ou onde posso encontrar informações para solucionar este problema ? (Sobre os recursos do Browser) Preciso saber suas funções e como utilizar DHTML dentro do LINUX, não encontrei nenhuma documentação que falasse a respeito disso.

Valeu !!!

PS.: Coloquei o script completo aqui abaixo, para executar o mesmo se for o caso basta colocá-lo em uma página HTML (no inicio da página). o mesmo abrirá sem figura, caso contrario coloque alguma figura pequena e renomei no código.

:)

<style type="text/css"><!--#master  {position:absolute; width: 200px; top: 10px; left: -230px; z-index:2; visibility:visible;}#menu  {position:absolute; width: 18px; top: 0px; left: 230px; z-index:5; visibility:visible;}#top  {position:absolute; width: 230px; top: 0px; left: 0px; z-index:5; visibility:visible;}#screen  {position:absolute; width: 230px; top: 6px; left: 0px; z-index:5; visibility:visible;}#screenlinks	{position:absolute; width: 230px; top: 6px; left: 0px; z-index:5; visibility:visible;}--></style><style type="text/css"><!--.NavJump {font-family: arial; font-size: 8pt; color: #808080; text-decoration: none;}a:link.NavJump {color : #808080;}a:visited.NavJump {color : #808080;}a:active.NavJump {text-decoration: none; color: #C0C0C0;}a:hover.NavJump {text-decoration: none; color: #C0C0C0;}--></style><script language = "javascript"><!--var ie = document.all ? 1 : 0var ns = document.layers ? 1 : 0if(ie){	document.write('<style type="text/css">')	document.write("#screen	{filter:Alpha(Opacity=30);}")	document.write("</style>")}if(ns){	document.write('<style type="text/css">')	document.write("#master	{clip:rect(0,150,250,0);}")	document.write("</style>")}//--></script><script language = "javascript"><!--var ie = document.all ? 1 : 0var ns = document.layers ? 1 : 0var master = new Object("element")master.curLeft = -230;	master.curTop = 10;master.gapLeft = 0;  master.gapTop = 0;master.timer = null;function moveAlong(layerName, paceLeft, paceTop, fromLeft, fromTop){	clearTimeout(eval(layerName).timer)	if(eval(layerName).curLeft != fromLeft){  if((Math.max(eval(layerName).curLeft, fromLeft) - Math.min(eval(layerName).curLeft, fromLeft)) < paceLeft){eval(layerName).curLeft = fromLeft}	else if(eval(layerName).curLeft < fromLeft){eval(layerName).curLeft = eval(layerName).curLeft + paceLeft}	else if(eval(layerName).curLeft > fromLeft){eval(layerName).curLeft = eval(layerName).curLeft - paceLeft}	if(ie){document.all[layerName].style.left = eval(layerName).curLeft}	if(ns){document[layerName].left = eval(layerName).curLeft}}if(eval(layerName).curTop != fromTop){     if((Math.max(eval(layerName).curTop, fromTop) - Math.min(eval(layerName).curTop, fromTop)) < paceTop){eval(layerName).curTop = fromTop}else if(eval(layerName).curTop < fromTop){eval(layerName).curTop = eval(layerName).curTop + paceTop}else if(eval(layerName).curTop > fromTop){eval(layerName).curTop = eval(layerName).curTop - paceTop}if(ie){document.all[layerName].style.top = eval(layerName).curTop}if(ns){document[layerName].top = eval(layerName).curTop}}eval(layerName).timer=setTimeout('moveAlong("'+layerName+'",'+paceLeft+','+paceTop+','+fromLeft+','+fromTop+')',30)}function setPace(layerName, fromLeft, fromTop, motionSpeed){eval(layerName).gapLeft = (Math.max(eval(layerName).curLeft, fromLeft) - Math.min(eval(layerName).curLeft, fromLeft))/motionSpeedeval(layerName).gapTop = (Math.max(eval(layerName).curTop, fromTop) - Math.min(eval(layerName).curTop, fromTop))/motionSpeedmoveAlong(layerName, eval(layerName).gapLeft, eval(layerName).gapTop, fromLeft, fromTop)}var expandState = 0function expand(){if(expandState == 0){setPace("master", 0, 10, 10); if(ie){document.menutop.src = "menub.gif"}; expandState = 1;}else{setPace("master", -230, 10, 10); if(ie){document.menutop.src = "menu.gif"}; expandState = 0;}}//--></script><div id="master"><div id="menu"><table border="0" width="18" cellspacing="0" cellpadding="0"><tr><td width="100%"><a href="javascript:expand()" onfocus="this.blur()"><img name="menutop" border="0" src="menu.gif" width="18" height="70"></a></td></tr></table></div><div id="top"><table border="0" width="230" cellspacing="0" cellpadding="0"><tr><td width="100%"><img border="0" src="top.gif" width="230" height="6"></td></tr></table></div><div id="screen"><table border="0" width="230" cellspacing="0" cellpadding="5"><tr><td width="100%" bgcolor="#808080"><table border="0" width="100%" bgcolor="#808080" cellspacing="0" cellpadding="0"><tr><td width="100%"><table border="0" width="100%" cellspacing="1" cellpadding="5"><tr><td width="100%" bgcolor="#FFFFFF"><font class="NavJump"><br></font><font class="NavJump"><br></font><font class="NavJump"><br></font><font class="NavJump"><br></font><font class="NavJump"><br></font><font class="NavJump"><br></font><font class="NavJump"><br></font><font class="NavJump"><br></font></td></tr></table></td></tr></table></td></tr></table></div><div id="screenlinks"><table border="0" width="230" cellspacing="0" cellpadding="5"><tr><td width="100%"><table border="0" width="100%" bgcolor="#808080" cellspacing="0" cellpadding="0"><tr><td width="100%"><table border="0" width="100%" cellspacing="1" cellpadding="5"><tr><td width="100%" bgcolor="#FFFFFF"><a><b><font color="#5471A7" size="1" face="Arial">Cliente/Empresas____________</font></b></a><br><a href="man_clientes.php" class="NavJump"><b><img src='arrows.gif' border='0'>  Novo Cadastro</b></a><br><a href="relacao_clientes.php" class="NavJump"><b><img src='arrows.gif' border='0'>  Relação de Clientes/Empresas</b></a><br><a><b><font color="#5471A7" size="1" face="Arial">Licenças____________________</font></b></a><br><a href="javascript:NewWin=window.open('../calc_kasp/calc.php','','toolbar=yes,location=no,directories=no,status=no,menubar=no,scrollbars=no,resizable=no,copyhistory=no,width=720,height=395');window['NewWin'].focus()" class="NavJump"><b><img src='arrows.gif' border='0'>  Orçamento Kaspersky</b></a><br><a><b></b></a><br><a href="relatorio.php" class="NavJump"><b><img src='arrows.gif' border='0'>  Relatorio</b></a><br><a href="javascript:NewWin=window.open('../calculadora/calculadora.php','','toolbar=yes,location=no,directories=no,status=no,menubar=no,scrollbars=no,resizable=no,copyhistory=no,width=248,height=228');window['NewWin'].focus()", class="NavJump"><b><img src='arrows.gif' border='0'>  Calculadora</b></a><br></td></tr></table></td></tr></table></td></tr></table></div></div><script language = "javascript"><!--if(ie){var sidemenu = document.all.master;}if(ns){var sidemenu = document.master;}function FixY(){if(ie){sidemenu.style.top = document.body.scrollTop+10}if(ns){sidemenu.top = window.pageYOffset+10}}setInterval("FixY()",100);//--></script>