function changeLeftMenu(sUser,sType,obj,id,lang){
	
	var aImgScr = {1 : 'produkty', 2 : 'dostawcy', 3 : 'ocenyfirm', 4 : 'certyfikat', 5 : 'bazafirm', 6: 'searchengine'};
	var aImgScr = {2 : 'searchengine', 3 : 'ocenyfirm', 4 : 'certyfikat', 5 : 'bazafirm'};
	if (id > 0)
		var imgId = id;
	else
		var imgId = obj.id.replace('btn','');
	for (var i=2;i<6;i++)
		document.getElementById('btn'+i).src='http://forad.pl/images/layout/buton_'+aImgScr[i]+'_'+lang+'.gif';
	document.getElementById('btn'+imgId).src='http://forad.pl/images/layout/buton_'+aImgScr[imgId]+'h_'+lang+'.gif';
	
	var oA=obj.parentNode.parentNode.parentNode.getElementsByTagName('a');
	for (var i = 0; i < oA.length; i++)
		oA[i].className = '';
	
	div_submenu_certificates_display = 'none';
	submenu_marks_display = submenu_companies_db_display = dbdate_display = companies_db_display = 'none';
	
	db_submit_display = table_search_display = rfInfo_display = '';
	
	searchText = '';
	searchTypeValue = 'M24';
	dbtype_value = 'N';
	var div_brd = document.getElementById('div_brd')
	div_brd.innerHTML = "";
	div_brd.style.display = "none";
	
	switch(sType){
		case("products2"):{
			var infoS = infoS1;
			var searchTypeValue = 'C';
			var searchText = sText2;
			rfInfo_display = 'none';
			break;
		}
		case("marks"):{
			changeRFinfo('rfAim','');
			if (document.getElementById('m1'))
				document.getElementById('m1').className = 'highlight';
			break;
		}
		case("top10f"):{
			changeRFinfo('top10f',lang);
			break;
		}
		case("top10s"):{
			changeRFinfo('top10s',lang);
			break;
		}
		case("lastMarks"):{
			changeRFinfo('lastMarks',lang);
			break;
		}
		case("showDetails"):{
			changeRFinfo('showDetails',lang);
			break;
		}
		case("certificates"):{
			changeRFinfo('swb','');
			document.getElementById('c1').className = 'highlight';
			break;
		}
		case("swb"):{
			changeRFinfo('swb','');
			break;
		}
		case("credit"):{
			changeRFinfo('credit','');
			break;
		}
		case("rfADVlist"):{
			changeRFinfo('rfADVlist','');
			break;
		}
		case("rfSUPlist"):{
			changeRFinfo('rfSUPlist','');
			break;
		}
		case("companies_db"):
			if (document.getElementById('d1'))
				document.getElementById('d1').className = 'highlight';
			break;
		case("new"):
			dbdate_display = '';
			db_submit_display = 'none';
			break
		case("changes"): {
			dbtype_value = 'C';
			dbdate_display = '';
			db_submit_display = 'none';
			break;
		}
	}
	switch(sType){
		case("certificates"):
		case("swb"):
		case("credit"):
		case("rfADVlist"):
		case("rfSUPlist"): {
			var infoS = infoS4;
			searchText = sText3;
			searchTypeValue = 'N';
			div_submenu_certificates_display = '';
			obj.className = "highlight";
			break;
		}
		case("companies_db"):
		case("current"):
		case("new"):
		case("changes"): {
			var infoS = infoS5;
			searchTypeValue = 'N';
			submenu_companies_db_display = companies_db_display = '';
			rfInfo_display = 'none';
			obj.className = "highlight";
			break;
		}
		case("marks"):
		case("top10f"):
		case("top10s"):
		case("lastMarks"): 
		case("showDetails"): {
			searchTypeValue = 'N';
			searchText = sText3;
			var infoS = infoS3;
			submenu_marks_display = '';
			obj.className = "highlight";
			break;
		}
	}
	document.getElementById('submenu_certificates').style.display = div_submenu_certificates_display;
	document.getElementById('searchType').value = searchTypeValue;
	document.getElementById('companiesdb').style.display = companies_db_display;
	document.getElementById('infoEngine').innerHTML = infoS;
	t = document.getElementById('keywordSearch');
	t.value = searchText;
	document.getElementById('frContent').style.display = rfInfo_display;
	
	document.getElementById('table_search').style.display = table_search_display;
	if (document.getElementById('dbdate')){
	document.getElementById('submenu_companies_db').style.display = submenu_companies_db_display;
	document.getElementById('dbdate').style.display = dbdate_display;
	document.getElementById('dbdatehead').style.display = dbdate_display;
	document.getElementById('dbtype').value = dbtype_value;
	document.getElementById('db_submit').style.display = db_submit_display;
	document.getElementById('submenu_marks').style.display = submenu_marks_display;
	
	}
	return false;
}