var appLongVer=navigator.appVersion;
var appVer=appLongVer.substring(0,1);

var visibleVar="null";
function init(){

appLongVer=navigator.appVersion;
appVer=appLongVer.substring(0,1);
if ((navigator.appName=="Netscape")&&(appVer==4)) {
NN4=true;
layerRef="document.layers"; 
obracket="[";
cbracket="]";
styleSwitch=""; 
visibleVar="show";
}else{
if ((navigator.appName=="Netscape")&&(appVer>4)) {
NN4=false;
layerRef="document.getElementById"; 
obracket="(";
cbracket=")";
styleSwitch=".style"; 
visibleVar="visible";
}
else {
NN4=false;
layerRef="document.all"; 
obracket="[";
cbracket="]";
styleSwitch=".style"; 
visibleVar="visible"; }
}
} 

function SwitchLayer(layerName){
if (eval(layerRef+obracket+'"'+layerName+'"'+cbracket+styleSwitch+'.visibility == visibleVar')){ 
if (NN4 == true) {
unviewLayer(layerName); }
}else{ 
if (NN4 == true) {
unviewAll();
viewLayer(layerName); }
}
} 

function showLayer(layerName){
if (NN4 != true) { viewLayer(layerName); }
} 

function hideLayer(layerName){
if (NN4 != true) { unviewLayer(layerName); }
} 

function viewLayer(layerName){
// eval(layerRef+obracket+'"'+layerName+'"'+cbracket+styleSwitch+'.left=screen.width-146-200');
eval(layerRef+obracket+'"'+layerName+'"'+cbracket+styleSwitch+'.display=""');
eval(layerRef+obracket+'"'+layerName+'"'+cbracket+styleSwitch+'.visibility="visible"'); 
} 

function unviewLayer(layerName){
eval(layerRef+obracket+'"'+layerName+'"'+cbracket+styleSwitch+'.visibility="hidden"'); 
} 

function unviewAll() {
var i=1;
while ( i<=5 )
{
idd_layer='low'+i;
eval(layerRef+obracket+'"'+idd_layer+'"'+cbracket+styleSwitch+'.visibility="hidden"');
i++  }
} 
function makeActive(idd) {
eval('source_str=document.images["'+idd+'"].src');
var num = source_str.lastIndexOf('.gif');
eval('document.images["'+idd+'"].src=source_str.substring(0,num)+"a.gif"');
} 
function makeUnActive(idd) {
eval('source_str=document.images["'+idd+'"].src');
var num = source_str.lastIndexOf('a.gif');
eval('document.images["'+idd+'"].src=source_str.substring(0,num)+".gif"');
} 


function NGetDate() {
adate=new Date();
month=(adate.getMonth() + 1);
cdate=adate.getDate();
year=adate.getYear();
if ((navigator.appName=="Netscape")&&(appVer>4)&&(year<2000)) { year=year+1900; }
if (month < 10) { month = "0" + month }
if (cdate < 10) { cdate = "0" + cdate }
datestr=( cdate + "."  + month +"." + year );
return datestr
} 

function LoadEng(afile) {
afile=afile.substring(0,afile.lastIndexOf('.'))+'_eng.html';
window.location.href=afile;
} 

function LoadRus(afile) {
afile=afile.substring(0,afile.lastIndexOf('_eng'))+'.html';
window.location.href=afile;
}