function swap_image(e, path) {
    e.src = path;
}

function topnav_mouseover(e){
	e.setAttribute((document.all ? "className" : "class"), "topnav-selected");				
}

function topnav_mouseout(e){
	e.setAttribute((document.all ? "className" : "class"), "topnav");
}

function actButton(e, action) {
	if(action=="on") 
		e.style.textDecoration='underline';
	else
		e.style.textDecoration='none';
}


function c_bg(id, imageName) {
    document.getElementById(id).style.background = "url(" + imageName + ") repeat";
}


function c_bg_home(id, imageName) {
    document.getElementById(id).style.background = "url(" + imageName + ") no-repeat top left";
}