//  Opens an popup window at the "whichURL" location, with the specified
//  width "w" and height "h".  Includes NO browser elements except the menu,
//  which it adds only for mac users (it appears in the system's menu bar).
// Optional 4th argument allows additional parameters to be passed in



function simplePopUp(whichURL,w,h,addtlParams)
{
    var optionString = "width="+w+",height="+h + addtlParams;

    // Mac users need a menubar
    if (navigator.appVersion.indexOf("Mac") > 0) {optionString+=",menubar"}
    window.open(whichURL,"_blank",optionString)
    
}