Ajaxmanager Not Found...null

I have a User Control and a Content Page. In the Content Page, I have a RadDockLayout control inside Update panel like below. I have an Image button, Once user swaps the position o

Solution 1:

It should be like this.

var ID;
functionInitiateAjaxRequest() {
    if (ID == null) {
        ID = $find("<%= Telerik.Web.UI.RadAjaxManager.GetCurrent(this.Page).ClientID %>");
        ID.ajaxRequest();
    }
    else
        ID.ajaxRequest();
}

Solution 2:

Try this as a work-around:

<scripttype="text/javascript">var ajaxMgrInstance = null;
    functionInitiateAjaxRequest() {
        if (ajaxMgrInstance == null) {
            ajaxMgrInstance == $find("<%= myRadAjaxManager.ClientID %>");
        }
        if (ajaxMgrInstance != null) {
            ajaxMgrInstance.ajaxRequest();
        }
        else {
            alert("AjaxManager not found..." + "<%= myRadAjaxManager.ClientID %>");
        }
    } 
</script>

Meanwhile I'll try to better locate the root cause of the issue.

EDIT: Updated $find call to match syntax of Telerik's API documentation.