<!-- rollovers -->

function newImage(arg) {
	if (document.images) {
		rslt = new Image();
		rslt.src = arg;
		return rslt;
	}
}

function changeImages() {
	if (document.images && (preloadFlag == true)) {
		for (var i=0; i<changeImages.arguments.length; i+=2) {
			document[changeImages.arguments[i]].src = changeImages.arguments[i+1];
		}
	}
}

var preloadFlag = false;
function preloadImages() {
	if (document.images) {
		tab1_over = newImage("images/tab1-over.png");
		tab2_over = newImage("images/tab2-over.png");
		tab3_over = newImage("images/tab3-over.png");
		tab4_over = newImage("images/tab4-over.png");
		tab5_over = newImage("images/tab5-over.png");
		tab6_over = newImage("images/tab6-over.png");
		search_button_over = newImage("images/search-button-over.png");
		ne_sel_over = newImage("images/ne-sel-over.png");
		ne_sel_down = newImage("images/ne-sel-down.png");
		nl_r_over = newImage("images/nl-r-over.png");
		pl_arrow_over = newImage("images/pl-arrow-over.png");
		pl2_arrow_over = newImage("images/pl2-arrow-over.png");
		pl3_arrow_over = newImage("images/pl3-arrow-over.png");
		ps2_arrow_over = newImage("images/ps2-arrow-over.png");
		preloadFlag = true;
	}
}

<!-- comentário à citação -->

var hnvis = 0;
var hnsel = 0;

function selHeadNote(s){
	
	hnsel = s;
	
}

function showHeadNote(){
	
	if (hnvis != 0) return;
	
	var hn = document.getElementById('headnote');
	
	if (hn){
		
		hn.style.left = (event.clientX-20)+ 'px';;
		hn.style.display='block';
		hnvis = 1;
	}
	
}

function hideHeadNote(){

	if (hnsel != 0) return;
	var hn = document.getElementById('headnote');
	
	if (hn){
		
		hn.style.display='none';
		hnvis = 0;

	}
}

function tryHideHeadNote(){

	setTimeout('hideHeadNote()',3000);
	
}