function swap_img(x,y) {
	document.getElementById(x).src=y;
}

var allowed_lvl=0;
function allow_create_lvl() {
	allowed_lvl=1;
}
function call_create_lvl() {
	if (allowed_lvl!=0) {
		allowed_lvl=3;
	}
}
function wait_till_create_lvl() {
	if (allowed_lvl>1) {
		allowed_lvl--;
		if (allowed_lvl==1) { 
			create_lvl('page');
		}
	}
	new additional_body();
}
window.setInterval('wait_till_create_lvl()',500);
function stop_waiting() {
	allowed_lvl=1;
}
function additional_in() { this[1]=stop_waiting(); }
function additional_out() {}
function additional_body() {}


var opened='';
function openBlock(x) {
	if (opened!='') { document.getElementById(opened).style.display='none'; }
	if (opened!=x) {
		document.getElementById(x).style.display='block';
		opened=x;
	} else {opened='';}
}

var openedT='';
function openTitleBlock(x) {
	if (openedT!='') {	document.getElementById(openedT).style.display='none';}
	if (openedT!=x) {
		if (opened!='') { document.getElementById(opened).style.display='none';opened=''; }
		document.getElementById(x).style.display='block';
		openedT=x;
	} else {
		if (opened!='') { document.getElementById(opened).style.display='none';opened=''; }
		openedT='';
	}
}