function gebi(id){
	return document.getElementById(id);
}

function show_div(object_id){
gebi(object_id).style.display = 'block';	
} 

function hide_div(object_div){
	gebi(object_div).style.display="none";
}

function redirect(url){
	top.location.href=url;
}



function fullScreen() {
window.open(location.href, '', 'fullscreen=yes, scrollbars=auto');
}