var visibleVar="null";
function init(){
p1=new Image; p1.src="documentsa.gif"; 
p2=new Image; p1.src="collecta.gif"; 
p3=new Image; p1.src="organa.gif"; 
p4=new Image; p1.src="weba.gif"; 
p5=new Image; p1.src="reservesa.gif"; 
p6=new Image; p1.src="redbooka.gif"; 
p7=new Image; p1.src="registera.gif"; 


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+'.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"');
}