v_xhtml1 = new Image(57,20);
v_xhtml1.src="./_img/xhtml1.gif";

v_xhtml2 = new Image(57,20);
v_xhtml2.src="./_img/xhtml2.gif";

v_css1 = new Image(57,20);
v_css1.src="./_img/css1.gif";

v_css2 = new Image(57,20);
v_css2.src="./_img/css2.gif";

function ShowOn(img)
{
document.getElementById(img).src = eval(img + "2.src");
return true;
}

function ShowOut(img)
{
document.getElementById(img).src = eval(img + "1.src");
return true;
}