function Viewer(winURL,winName,winWidth,winHeight,origY,origX,scrollWin,resWin) {
 winAttr = 'width=' + winWidth + ',height=' + winHeight + ',top=' + origY + ',left=' + origX + ',scrollbars=' + scrollWin + ',resizable=' + resWin;
 viewer = window.open(winURL,winName,winAttr);
}

function do_nothing(){}