savescroll (Entry Nr. 49, by user 1 | edit) |
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| /*
Script by Gibney-Enterprises
This saves the position the document is currently scrolled to in a cookie
if you visit the document again it restores the poition
Currently only one value per domain is saved
*/
function getCookieValue(cookieName)
{
var value=null;
if(document.cookie != "")
{
cookieName=cookieName+"=";
var start=document.cookie.indexOf(cookieName);
if(start>=0)
{
start=start+cookieName.length;
var end=document.cookie.indexOf(";", start);
if(end<0) end=document.cookie.length;
value=document.cookie.substring(start,end);
value=unescape(value);
}
}
return value;
}
function setCookie(cookieName,cookieValue, expires, path, domain, secure)
{
var cookie=cookieName+"="+escape(cookieValue)+";";
if (expires) cookie+=" expires="+expires+";";
if (path) cookie+=" path="+path+";";
if (domain) cookie+=" domain="+domain+";";
if (secure) cookie+=" secure;";
document.cookie=cookie;
}
function getPage()
{
if ("undefined"!=typeof(mg_savescroll_forced_page)) return mg_savescroll_forced_page;
var name=window.location.pathname;
// var indexpos=name.indexOf('index.php');
// if (indexpos==name.length-9) name=name.substring(0,name.length-9);
if (name.substring(name.length-9)=='index.php') name=name.substring(0,name.length-9);
name=escape(name);
return name;
}
function saveScrollPos()
{
var page=getPage();
var scrollPos=0;
var scrollPos=document.documentElement.scrollTop; // ie and firefox
if (!scrollPos) scrollPos=document.body.scrollTop; // Chrome and Safari
if (!scrollPos) scrollPos=window.pageYOffset; // IPad
setCookie('mg_savescroll',page+'|'+scrollPos,false,'/');
}
function restoreScrollPos()
{
var page=getPage();
var scrollPos=null;
// is there a cookie?
var cookie=getCookieValue('mg_savescroll');
if (cookie==null) return;
// is it for this page?
var pos=cookie.indexOf(page);
if (pos!=0) return;
// get the saved position
var pos=cookie.indexOf("|");
if (pos>0) scrollPos=cookie.substr(pos+1);
// if we have a saved position scroll there...
if (scrollPos!=null) window.scrollTo(0, scrollPos);
}
// document.onmousedown=saveScrollPos;
document.onclick=saveScrollPos;
window.onload=restoreScrollPos; |
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