function getElementsByClass( searchClass, domNode, tagName) {
	if (domNode == null) domNode = document;
	if (tagName == null) tagName = '*';
	var el = new Array();
	var tags = domNode.getElementsByTagName(tagName);
	var tcl = " "+searchClass+" ";
	for(i=0,j=0; i<tags.length; i++) {
		var test = " " + tags[i].className + " ";
		if (test.indexOf(tcl) != -1)
			el[j++] = tags[i];
	}
	return el;
}

function mouseDown(id) {
	document.getElementById(id).style.backgroundPosition="left bottom";
}

function mouseUp(id)
{
	document.getElementById(id).style.backgroundPosition="left top";
}

function hmenuMouseDown(number){
	if (number < 7)
	{
		document.getElementById("b" + number).src="http://www.sharenobg.com/images/bullet0.gif";
	}
	if (number > 1)
	{
		document.getElementById("b" + (number-1)).src="http://www.sharenobg.com/images/bullet0.gif";
	}
}

function hmenuMouseUp(number) {
	if (number < 7)
	{
		document.getElementById("b" + number).src="http://www.sharenobg.com/images/bullet.gif";
	}
	if (number > 1)
	{
		document.getElementById("b" + (number-1)).src="http://www.sharenobg.com/images/bullet.gif";
	}
}

function setFont(size) {

	var id = "f" + size;
	var hsize = size + 3;

	var articles = getElementsByClass('article');
	for (var i = 0; i < articles.length; i++) {
		//var childNodes = articles[i].getChildNodes();
		//for (j = 0; j < childNodes.length; j++) {
		//	childNodes[j].style.fontSize = s;
		//}
		articles[i].style.fontSize = size + 'px';
	}

	var titles = getElementsByClass('title');
	for (i = 0; i < titles.length; i++) {
		titles[i].style.fontSize = hsize + 'px';
		if (hsize > 16) titles[i].style.fontWeight = 'normal';
		else titles[i].style.fontWeight = 'bold';
	}

	var fonts = getElementsByClass('fonts');
	for (i = 0; i < fonts.length; i++) {
		fonts[i].style.textDecoration = 'none';
	}
	
	document.getElementById(id).style.textDecoration = 'underline';
}