function doPopup(dest){
 var screenPop=window.open("popup.php?page=" + dest + "", "screenPop", "width=600, height=600, channelmode=no, directories=no, left=50, location=no, menubar=no, status=no, toolbar=no, top=50, scrollbars=yes");
}

function doPopupExtra(dest){
 var screenPopExtra = window.open("popup.php?page=" + dest + "", "screenPopExtra", "width=600, height=600, channelmode=no, directories=no, left=50, location=no, menubar=no, status=no, toolbar=no, top=50, scrollbars=yes");
}

function doPopupLarge(dest){
 var screenPopLarge=window.open("popup.php?page=" + dest + "", "screenPop", "width=600, height=700, channelmode=no, directories=no, left=10, location=no, menubar=no, status=no, toolbar=no, top=10, scrollbars=yes");
}