function popwindow(pagename) {
    window.open(pagename,'','toolbar=no,location=no,directories=no,status=yes,menubar=yes,scrollbars=yes,resizable=yes,copyhistory=no,height=600,width=800,top=0,left=0');
}


function popwindowSM(pagename) {
    window.open(pagename,'','toolbar=no,location=no,directories=no,status=yes,menubar=no,scrollbars=yes,resizable=yes,copyhistory=no,width=350,height=400,top=50,left=50');
}



function popwindowMD(pagename) {
    window.open(pagename,'','toolbar=no,location=no,directories=no,status=yes,menubar=no,scrollbars=yes,resizable=yes,copyhistory=no,width=400,height=250,top=50,left=50');
}



function popwindowTALL(pagename) {
    window.open(pagename,'','toolbar=no,location=no,directories=no,status=yes,menubar=no,scrollbars=yes,resizable=yes,copyhistory=no,width=400,height=350,top=50,left=50');
}