function mouseOver()
{
mainbodycenter = document.getElementById("columncenter");
mainbodycenter.style.filter = "alpha(opacity=30)";
mainbodycenter.style.opacity = "0.3";
}
function mouseOut()
{
mainbodycenter = document.getElementById("columncenter");
mainbodycenter.style.filter = "alpha(opacity=100)";
mainbodycenter.style.opacity = "1";
}