//rollover	
function change(imgNm,gif) {
	document.images[imgNm].src = "images/" + gif;
	}
	
// Show-hide layers
function domTab(grp,st,i,nb,imgNm){
  if (document.getElementById){
    var old = document.getElementById(grp+i).style.display;
    for(g=1; g<nb+1; g++){
      document.getElementById(grp+g).style.display='none';
		document.images[imgNm+g].src = "images/bt_" + (grp+g) + ".gif";
    }
      document.getElementById(grp+i).style.display='block';
		document.images[imgNm+i].src = "images/bt_" + (grp+i) + "-over.gif";
    if (old == "none" || old == "") {
      document.getElementById(grp+i).style.display='block';
		document.images[imgNm+i].src = "images/bt_" + (grp+i) + "-over.gif";
    }
  }
}

function validLogin(){
document.f.submit();
}