/** ShowHide JS function **/
var ns4=(document.layers);
var ie=(document.all);
var w3=(document.getElementById && !ie);

function showhide(groupid){
    if(!ns4 && !ie && !w3) return;
    if(ie) thisgroup=eval('document.all.' + groupid + '.style');
    else if(ns4) thisgroup=eval('document.layers["' + groupid +'"]');
    else if(w3) thisgroup=eval('document.getElementById("' + groupid + '").style');
    if (thisgroup.display == "none")
        thisgroup.display=""; 
    else
        thisgroup.display ="none"; 
}