function zxcV(zxcpos){
 var zxcw=window.frames['guestbook'];
 var zxctravel=zxcBdyWH(zxcw)[1];
 window.frames['guestbook'].scroll(zxcWWHS(zxcw)[2],zxcpos*zxctravel);
}

function zxcH(zxcpos){
 var zxcw=window.frames['guestbook'];
 var zxctravel=zxcBdyWH(zxcw)[0]-document.getElementById('guestbook').offsetWidth;
 window.frames['guestbook'].scroll(zxcpos*zxctravel,zxcWWHS(zxcw)[3]);
}

function zxcWWHS(zxcw){
 if (zxcw.innerHeight) return [zxcw.innerWidth-10,zxcw.innerHeight-10,zxcw.pageXOffset,zxcw.pageYOffset];
 else if (zxcw.document.body.clientWidth) return [zxcw.document.body.clientWidth,zxcw.document.body.clientHeight,zxcw.document.body.scrollLeft,zxcw.document.body.scrollTop];
 else if (zxcw.document.documentElement.clientHeight) return [zxcw.document.documentElement.clientWidth-10,zxcw.document.documentElement.clientHeight-10,zxcw.document.documentElement.scrollLeft,document.zxcw.documentElement.scrollTop];
}

function zxcBdyWH(zxcw){
 if (zxcw.document.body.scrollHeight>zxcw.document.body.offsetHeight) return [zxcw.document.body.scrollWidth,zxcw.document.body.scrollHeight]; // all but Explorer Mac
 return [zxcw.document.body.offsetWidth,zxcw.document.body.offsetHeight]; // Explorer Mac;
}