function openIwin(theWidth,theHeight, username, idx){
    if (theWidth == "") {theWidth = 600 }
    if (theHeight == "") {theHeight = 600 }
    var windowname = ""
    var details, URL
    var max = screen.height-90

    if (theHeight > max)theHeight = max

    URL = "http://partybus-uk.co.uk/online_inv.htm"

    details = "titlebar=no,left=0,top=0,toolbar=no, address=no, status=yes, scrollbars=yes, resizable=yes, height=" + theHeight + ",width=" + theWidth;
    var win2 = window.open(URL,windowname,details);
    win2.focus()
}