<!-- //
/* controller for various elements on beachparty.dk */
var useragent = navigator.appName;
var maincontent = document.getElementById('maincontentdiv');

if (document.getElementById('menucontainerid')) {
	var menucontainer = document.getElementById('menucontainerid');
} else {
	var menucontainer = document.getElementById('menucontainerbillet');
	//alert(menucontainer);
}

// adjust height for elements
if ((maincontent) && (menucontainer.offsetHeight > maincontent.offsetHeight)) {
	if (maincontent) { // sub
		maincontent.style.height = menucontainer.offsetHeight - 20;
		maincontent.height = menucontainer.offsetHeight - 20;
	} else { // main
		maincontent.style.height = document.getElementById('centermiddle').offsetHeight - 31;
		maincontent.height = document.getElementById('centermiddle').offsetHeight - 31;
	}
} else {
	if (maincontent) { // sub
		menucontainer.style.height = maincontent.offsetHeight - 5;
		menucontainer.height = maincontent.offsetHeight - 5;
	} else { // main
		menucontainer.style.height = document.getElementById('centermiddle').offsetHeight - 31;
		menucontainer.height = document.getElementById('centermiddle').offsetHeight - 31;
	}
}

/* functions */
function validateNewsletter() {
	if (document.nyheder_form.name.value.length == 0) {
		alert("Du har ikke indtastet dit navn");
		return false;
	}
	
	if (document.nyheder_form.email.value.length == 0 || document.nyheder_form.email.value.indexOf("@") == -1 || document.nyheder_form.email.value.indexOf(",") != -1) {
		if (document.nyheder_form.email.value.indexOf(",") != -1) alert("Du må kun indtaste én e-mail adresse.");
		else alert("Du har ikke indtastet din e-mail adresse");
		return false;
	}
}

function expandmenu(menuid) {

	var menudiv = document.getElementById('expid_' + menuid);
	var containerdiv = document.getElementById('menucontainerid');
	
	if (menudiv.style.backgroundImage=='url(files/layout/fold/closed.gif)') {
		menudiv.style.backgroundImage='url(files/layout/fold/open.gif)';
	} else {
		menudiv.style.backgroundImage='url(files/layout/fold/closed.gif)';
	}
	var submenus = document.getElementById('submenu' + menuid);
	if ((submenus.style.display=='none') || (submenus.style.display=='')) {
		submenus.style.display='block';
	} else {
		submenus.style.display='none';
	}
	
}

// expand all menus - request
/*
for (i=0; i<=15; i++) {
	expandmenu(i);
}
*/
// -->