function one() 
{
document.getElementById("facility").innerHTML = String("<img alt='Criticon I' src='criticonI/building_pic.jpg' width='333' height='344' />");

}

function two() 
{
document.getElementById("facility").innerHTML = String("<img alt='Criticon I' src='criticonI/building_pic2.jpg' width='333' height='344' />");
}