function open_chat(lang) {
	if (lang=='bg') 
		  //window.open('http://finance.varchev.com/chat/chata.swf','online_chat','height=410, width=496, toolbar=no, status=no, scrollbars=no, resizable=yes, menubar=no');
		window.open('http://varchevbrokers.com:8080/chat/index.html','online_chat','height=520, width=640, toolbar=no, status=no, scrollbars=no, resizable=yes, menubar=no');
	else
		window.open('http://varchevbrokers.com:8080/chat/index_en.html','online_chat','height=520, width=640, toolbar=no, status=no, scrollbars=no, resizable=yes, menubar=no');
		//window.open('http://finance.varchev.com/chat/chata_en.swf','online_chat','height=410, width=496, toolbar=no, status=no, scrollbars=no, resizable=yes, menubar=no');
	}