function open_home()
{	var dim_x = 1420;
	var dim_y = 895;
	var bmax=screen.availWidth;
	var hmax=screen.availHeight;
	var breite, hoehe, page, fenster;
	if (bmax <= 1280 || hmax <= 1024) {
		breite = bmax;
		hoehe = hmax;
		page = "home_1.html";
		fenster = "home";
	} else if ((1280 < bmax && bmax <=1440) || (1024 < hmax && hmax <= 900)) {
		breite = 1260;
		hoehe = 870;
		page = "home_1.html";
		fenster = "home";
	} else if (bmax > 1440 || hmax > 900) {
		breite = bmax;
		hoehe = hmax;
		page = "home_2.html";
		fenster = "home";
	} else if (!bmax || !hmax) {
		page = "home_1.html";
		fenster = "home";
	}
	window.location.href = page;
}
function pos_topleft()
{	self.moveTo(0,0);
	self.focus();
}
function resize_index() {
	var bmax=screen.availWidth;
	var hmax=screen.availHeight;
	var breite=950;
	var hoehe=890;
	if (hmax <= hoehe) {
		self.resizeTo(bmax,hmax);
	}
	else {
		self.resizeTo(breite,hoehe);
	}
	pos_topleft();
}
function resize_home() {
	self.resizeTo(screen.availWidth,screen.availHeight);
	pos_topleft();
}