var last_tab = "";
var last_pos = "";
function hide_tab() {
	if (document.getElementById(last_tab)) {
		document.getElementById(last_tab).className = "tab_border" + last_pos;
		document.getElementById(last_tab + "_cnt").style.display = "none";
	}	
}
function select_tab(id, pos) {
	if (document.getElementById(id)) {
		hide_tab();
		last_pos = pos;
		last_tab = id;
		document.getElementById(id).className = "tab_border" + pos + "s";
		document.getElementById(id + "_cnt").style.display = "block";
	}
}
function select_info(spage, hpage) {
	if (document.getElementById('bog_detaljer_'+spage) && document.getElementById('bog_detaljer_'+hpage)) {
		document.getElementById('bog_detaljer_'+spage).style.display = "block";
		document.getElementById('bog_detaljer_'+hpage).style.display = "none";
	}
}

function winopen(url, title, w, h){
	var LeftPos=(screen.width)?(screen.width-w)/2:100;
	var TopPos=(screen.height)?(screen.height-h)/2:100;
	window.open(url,title,'width='+w+',height='+h+',left='+LeftPos+',top='+TopPos, true);
	return true;
}