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 disableSelection() {
	var nodes = getElementsByClass('disableSelection');
	for(i=0; i<nodes.length; i++) {
    nodes[i].onselectstart = function() {
        return false;
    };
    nodes[i].unselectable = "on";
    nodes[i].style.MozUserSelect = "none";
    nodes[i].style.cursor = "default";	
    }
}

function clearSearchField(field) {
   if (field.className == 'unEdited') {
      field.value = '';
      field.className = '';
   }
}

function doItemHover() {
   this.style.backgroundPosition='0 0';
}

function redoItemHover() {
   this.style.backgroundPosition='-200px';
}

Event.observe(window, 'load', function() {
   disableSelection();
   $$('.itemHover').each(function(item) { item.observe('mouseover', doItemHover); item.observe('mouseout', redoItemHover); });
}, false);

//$$('.itemHover').each(function(item) { item.observe('mouseover', itemHover); });