function getElementsByAttribute(attr,val,container)
{
	container = container||document;
	var all = container.all||container.getElementsByTagName('*');
	var arr = [];
	for(var k=0;k<all.length;k++) {
		if(all[k].getAttribute(attr) == val) {
			arr[arr.length] = all[k];
		}
	}
	return arr;
}

function changeSelection(from_class,to_class,container)
{
	var from_items = getElementsByAttribute("class",from_class,container);
	for(var k=0;k<from_items.length;k++) {
		from_items[k].setAttribute("class",to_class);
	}
}
function changeThis(to_class,target) {
	target.setAttribute("class",to_class);
}

function writeHTML(HTML,container)
{
	document.getElementById(container).innerHTML = HTML;
}