/* ScrollScript - javascript functions which restore the user's screen position
on a page refresh. To use:
1) include this script in the page
eg
2) add onload="scroll_init()" to the element
3) add a hidden form field called ScrollPos with ViewState=True and Width=0px)
eg
Assumption: Form is called Form1
*/
var ScrollPosTB;
function scroll_init()
{
// Restore last scroll position (if postback)
ScrollPosTB = document.getElementById("ScrollPos");
if(ScrollPosTB == null)
ScrollPosTB = document.getElementById("ctl00_ScrollPos");
if(ScrollPosTB == null)
{
alert("ERROR: Could not find ScrollPos texbox");
return;
}
var sScrollTop = ScrollPosTB.value;
if (sScrollTop != "")
document.documentElement.scrollTop = sScrollTop;
// Start recording scroll position
timerID = setTimeout("scroll_record()",1000)
}
function scroll_record()
{
// Store current scroll position in ScrollPos field
ScrollPosTB.value = document.documentElement.scrollTop;
//alert(document.documentElement.scrollTop);
// Do another restore in half a sec
timerID = setTimeout("scroll_record()",500)
}