var isLanguageSelectorExpanded = false;


function toggleLanguageSelector() {
	var availableLanguagesElement = document.getElementById("availableLanguages");
	var languageSelectorElement = document.getElementById("navLanguageSelector");
	if (!isLanguageSelectorExpanded) {
		availableLanguagesElement.style.display = "inline-block";
		languageSelectorElement.style.backgroundImage = "url(http://www.british-study.com/media/images/navigation/language-selector-arrow-hide.gif)";
		isLanguageSelectorExpanded = true;
	} else {
		availableLanguagesElement.style.display = "none";
		languageSelectorElement.style.backgroundImage = "url(http://www.british-study.com/media/images/navigation/language-selector-arrow-show.gif)";
		isLanguageSelectorExpanded = false;
		isOnMouseOutRunning = false;
	}
}


function setLanguageCaption(language) {
	var languageCaptionElement = document.getElementById("availableLanguagesCaption");
	languageCaptionElement.innerHTML = language;
}

function setElementTransparency(element, transparency) {
	if (transparency >= 1 && transparency <= 100) {
		element.style.opacity = transparency / 100;
		element.style.filter = "alpha(opacity = " + transparency + ")";
	}
}


function toggleElementVisibility(elementId, toggleMode) {
	var targetObject = document.getElementById(elementId);
	if (toggleMode == true) {
		targetObject.style.display = "block";
	} else {
		targetObject.style.display = "none";
	}
}


function rolloverBackground(element, rolloverImageUrl) {
	if (rolloverImageUrl.length > 0) {
		element.style.backgroundImage = "url(" + rolloverImageUrl + ")";
	} else {
		element.style.backgroundImage = "none";
	}
}