var is=new Array();
is.ie=document.all?1:0;

function hideSelect(x) {

//x must be either visible or hidden.
//no error checking.

// make selects invisible so they do not obscure the div
  if (is.ie)
    for (i=0; i<document.all.tags('select').length; i++){
    obj = document.all.tags('select')[i];
    if (!obj || !obj.offsetParent) continue;
    obj.style.visibility = x;
  }
}