var browserName = navigator.appName;
 var browserVer = parseInt(navigator.appVersion);
function release(num){
if (browserVer >= 3){
 if (num == 0 )	document.but0.src="images/main.gif";
 if (num == 1 )	document.but1.src="images/about.gif";
 if (num == 2 )	document.but2.src="images/works.gif";
 if (num == 3 )	document.but3.src="images/projects.gif";
 if (num == 4 )	document.but4.src="images/services.gif";
 if (num == 5 )	document.but5.src="images/materials.gif";
 if (num == 6 )	document.but6.src="images/price.gif";
 if (num == 7 )	document.but7.src="images/contacts.gif";
 if (num == 8 )	document.but8.src="images/plenki.gif";
 if (num == 9 )	document.but9.src="images/plastiki.gif";
}}
function press(num){
if (browserVer >= 3){
 if (num == 0 )	document.but0.src="images/main_on.gif";
 if (num == 1 )	document.but1.src="images/about_on.gif";
 if (num == 2 )	document.but2.src="images/works_on.gif";
 if (num == 3 )	document.but3.src="images/projects_on.gif";
 if (num == 4 )	document.but4.src="images/services_on.gif";
 if (num == 5 )	document.but5.src="images/materials_on.gif";
 if (num == 6 )	document.but6.src="images/price_on.gif";
 if (num == 7 )	document.but7.src="images/contacts_on.gif";
 if (num == 8 )	document.but8.src="images/plenki_on.gif";
 if (num == 9 )	document.but9.src="images/plastiki_on.gif";
}}
function simplePreload(){ 
  var args = simplePreload.arguments;
  document.imageArray = new Array(args.length);
  for(var i=0; i<args.length; i++){
    document.imageArray[i] = new Image;
    document.imageArray[i].src = args[i];
}}