function setHeight()
{   
     var standardLength = 499
     var contentarea = document.getElementById("content");
    	var currentHeight = contentarea.offsetHeight;

    if (currentHeight > 499)
    {

    document.getElementById("page").style.height = (currentHeight - standardLength)+910;
    document.getElementById("leftborder").style.height = (currentHeight - standardLength)+910;
    document.getElementById("middle").style.height = (currentHeight - standardLength)+910;
    }
}