// general var inits
	var i, j, s, obj;
	var menus = [ 'about', 'news', 'catalog', 'artists', 'distrib', 'contact', 'links' ];
		
	// split path part of URL and 'search' part
	var locFull = location.href;
	var locPath, locParams, locFile;

	i = locFull.indexOf("?");
	if( i >= 0 ) {
		locPath		= locFull.substring( 0, i );
		locParams	= locFull.substring( i + 1 );
	} else {
		locPath		= locFull;
		locParams	= "";
	}
	i = locPath.lastIndexOf("/");
	locFile = locPath.substring( i+1 );
		
	// retrieve parameters and put them into an array of objects
	var paramStrings	= locParams.split("&");
	var paramArray		= new Array();
		
	for( i = 0, j = 0; i < paramStrings.length; i++ ) {
		s = paramStrings[i].split("=");
		if( s.length == 2 ) {
			paramArray[j++]		= { name: s[0], value: s[1] };
		}
	}
	for( i = 0, j = paramArray.length; i < j; i++ ) {
		paramArray[paramArray[i].name]	= paramArray[i];
	}

	// precache images
	if( document.images ) {
		var imagesNormal = new Object();
		var imagesHilite = new Object();
		for( i = 0; i < menus.length; i++ ) {
			imagesNormal[menus[i]] = new Image( 57, 24 );
			imagesNormal[menus[i]].src = '../images/slice_'+menus[i]+'.jpg';
			imagesHilite[menus[i]] = new Image( 57, 24 );
			imagesHilite[menus[i]].src = '../images/slice_'+menus[i]+'_sel.jpg';
		}
	}

	// ---- functions begin here ----

	// reload page to adapt to new size settings etc.
	// browser history is not affected
	function reload()
	{
		load( locPath );
	}
		
	function load( name )
	{
		var locFull = name;
		var delim	= "?";
		var i;
			
		for( i = 0; i < paramArray.length; i++ ) {
			locFull += delim + paramArray[i].name + "=" + paramArray[i].value;
			delim	 = "&";
		}

		location.replace( locFull );
	}
		
	// read a parameter like language, image size etc.
	function getParam( name, defValue )
	{
		var obj = paramArray[ name ];
		if( obj && (typeof obj.value != "undefined") ) {
			return obj.value;
		} else {
			return defValue;
		}
	}

	// likewise set an parameter		
	function setParam( name, value )
	{
		var obj = paramArray[ name ];
		if( obj ) {
			obj.value = value;
		} else {
			obj = { name: name, value: value };
			paramArray[paramArray.length] = obj;
			paramArray[name] = paramArray[paramArray.length-1];
		}
	}

	// create a table for page navigation
	function writePageHead()
	{
		document.write( '<DIV ID="slice-apostrov"><IMG SRC="../images/slice_apostrov.jpg" WIDTH=196 HEIGHT=72 ALT="apostrov recordings"> </DIV><DIV ID="slice-2"><IMG SRC="../images/slice_2.jpg" WIDTH=249 HEIGHT=11 ALT=""></DIV><DIV ID="slice-3"></DIV>' );
	}

	// create a table for page navigation
	function writeNavBar()
	{
		writePageHead();
		
		var htmlNav = '';
		var i;
		
		for( i = 0; i < menus.length; i++ ) {
			htmlNav += '<DIV ID="slice-'+menus[i]+'">';
			if( locFile.indexOf( menus[i] ) != -1 ) {
				htmlNav += '<IMG SRC="../images/slice_'+menus[i]+'_sel.jpg" WIDTH=57 HEIGHT=24 BORDER=0 ALT="'+menus[i]+'">';
			} else {
				htmlNav += '<A HREF="'+menus[i]+'.html"><IMG SRC="../images/slice_'+menus[i]+'.jpg" WIDTH=57 HEIGHT=24 BORDER=0 ALT="'+menus[i]+'"></A>';
			}
			htmlNav += '</DIV><DIV ID="slice-tab'+(i+1)+'"> <IMG SRC="../images/slice_tab'+(i+1)+'.jpg" WIDTH=7 HEIGHT=24 ALT=""></DIV>';
		}

		htmlNav += '<DIV ID="slice-18"><IMG SRC="../images/slice_18.jpg" WIDTH=249 HEIGHT=37 ALT=""></DIV><DIV ID="slice-19"></DIV><DIV ID="slice-20"></DIV>';

		document.write( htmlNav );
	}