// ////////////////////////////////////////////////////////////////////////////////////////////////

var technologyArrow = buildValidServerRelativeUrl("/_common/img/standard_elements/arrow_techniquedetail_index.gif");

// jump to the position of the letter
function jumpto (letter) {
	azDiv.scrollBy(positions[letter] - azDiv.cTop);
	//showTypo(letter);
}

// collection of letter-functions
function showArrowJumpPosition (letter, img) {
	showArrow(letter,img);
	jumpto(letter);
}

// store which was the last arrow-icon
var currentLetter = null;
var currentImg = null;

function showArrow (letter, img) {
	if (currentImg != null) {
		document[currentImg].src =  transGif;
	}
	document[img].src =  technologyArrow;
	currentImg = img;
	if (currentLetter != null) {
		src = '/_common/img/alphabet/' + currentLetter + '_l.gif';
		src = buildValidServerRelativeUrl(src);
		document['typo' + currentLetter].src = src;
	}
	src = '/_common/img/alphabet/' + letter + '_h.gif';
	src = buildValidServerRelativeUrl(src);
	document['typo' + letter].src = src;
	currentLetter = letter;
}

function letterOff(settedLetter) {
	src = '/_common/img/alphabet/' + settedLetter + '_l.gif';
	src = buildValidServerRelativeUrl(src);
	document['typo' + settedLetter].src = src;
}

function letterOn(newLetter) {
	src = '/_common/img/alphabet/' + newLetter + '_h.gif';
	src = buildValidServerRelativeUrl(src);
	document['typo' + newLetter].src = src;
}