function read_cookie(name){
	var end;
	var begin=document.cookie.indexOf(name);
	if (begin==-1) {
		return "null";
	}
	begin+=name.length;
	if (document.cookie.indexOf(";",begin)==-1){
		end=document.cookie.length;
	}else {
		end=document.cookie.indexOf(";",begin);
	}
	var cookie_value=document.cookie.substring(begin,end);
	return cookie_value;
}

function set_lang(value){
	var d = new Date();
	var year=d.getFullYear();
	var month=d.getMonth();
	var day=d.getDate();
	var new_date = new Date(year, month, day+7, 0);
	var exp = new_date.toGMTString();
	document.cookie="lang="+value+";expires="+exp;
}

function check(){
	if(read_cookie('loaded=')!='true') {
		var d = new Date();
		var year=d.getFullYear();
		var month=d.getMonth();
		var day=d.getDate();
		var new_date = new Date(year, month, day+1, 0);
		var exp = new_date.toGMTString();
		document.cookie="loaded=true"+";expires="+exp;
		return false;
	} else return true;
}

function retWidth() {
	return document.body.clientWidth;
}

function resize(h) {
	//alert(h);
	document.getElementById('main_div').style.height=h;
}

function window_resize() {
	var _width=document.body.clientWidth;
	if(_width>900) {
		_width=(_width-900)/2;
		window.document.main.SetVariable("_root.lmask._width", _width);
		window.document.main.SetVariable("_root.lmask._x", -_width);
		window.document.main.SetVariable("_root.rmask._width", _width);
		window.document.main.SetVariable("_root.rmask._x", 900);
	}else {
		window.document.main.SetVariable("_root.lmask._width", 0);
		window.document.main.SetVariable("_root.rmask._width", 0);
	}
}