Problema postback

function SetTarget()
{
var scr = $('input[type=hidden][id*=scrollVal]');
scr[0].value = document.getElementById('content').scrollTop;

//var idfoc = $('input[type=hidden][id*=hideFocus]');
//idfoc[0].value = idParam;
}

function GetTarget()
{
var scr = $('input[type=hidden][id*=scrollVal]');
document.getElementById('content').scrollTop = scr[0].value;

$("input.GarClaCheckBox").click(function getFocus() {
var idchek = $(this).attr("id");
var idParam = $("td.GarClaParam2 > input").attr("id");

if(idchek!=null)
{
var chr = idchek.charAt(3);
var chr1 = idchek.charAt(4);
idParam = idParam.substring(0, 3) + chr + idParam.substring(3+1);
idParam = idParam.substring(0, 4) + chr1 + idParam.substring(4+1);
}
$("td.GarClaParam2 > input[id =" + idParam + "]").focus();
});

//debugger;
//var idfoc = $('input[type=hidden][id*=hideFocus]');
//idParam = idfoc[0].value;
}



        $(function(){           
           GetTarget();
           });

        Sys.WebForms.PageRequestManager.getInstance().add_endRequest(function() {
            GetTarget();
                        
            });

$(document).ready(function() {
//tuo script
});

function SetTarget()
{
var scr = $('input[type=hidden][id*=scrollVal]');
scr[0].value = document.getElementById('content').scrollTop;
}

$("input.GarClaCheckBox").click(function getFocus() {
var idchek = $(this).attr("id");
var idParam = $("td.GarClaParam2 > input").attr("id");
if(idchek!=null)
{
var chr = idchek.charAt(3);
var chr1 = idchek.charAt(4);
idParam = idParam.substring(0, 3) + chr + idParam.substring(3+1);
debugger;
idParam = idParam.substring(0, 4) + chr1 + idParam.substring(4+1);
}
//$("td.GarClaParam2 > input[id =" + this.idParam + "]").focus();
this.getidParam = alert(idParam);
});

function GetTarget()
{
var scr = $('input[type=hidden][id*=scrollVal]');
document.getElementById('content').scrollTop = scr[0].value;
}
              
            $(function(){                    
             GetTarget();
             var test = new getFocus();
             test.getidParam; 
                      });

        Sys.WebForms.PageRequestManager.getInstance().add_endRequest(function() {
            GetTargets();                     
            });