//**************************************************
function stopEvent(event){
    if (event == null){
        return
    }
    
    var mBrowser = detectBrowser()
    
    switch (mBrowser){
        case "IE":
            event.returnValue = false
            break;
        case "FF":
            event.preventDefault()
            break;
        case "SF":
            event.stopPropagation()
            break;
        case "OP":
            event.preventDefault()
            break;            
    }
}
//**************************************************
function detectBrowser(){
    var mReturnValue = null
    var mAgent = new String(navigator.userAgent.toLowerCase())
    
    if (mAgent.indexOf("msie") !== -1){
        mReturnValue = "IE"
    }else if(mAgent.indexOf("firefox") !== -1){
        mReturnValue = "FF"
    }else if(mAgent.indexOf("safari") !== -1){
        mReturnValue = "SF"
    }else if(mAgent.indexOf("opera") !== -1){
        mReturnValue = "OP"
    }
        
    return mReturnValue

}
//**************************************************
function DoCallBack(functionName, functionArguments, endFunction, context){
    var vstateID = document.getElementById("__VIEWSTATEID");
    var vstateData;
    if(vstateID != null){
      vstateID = vstateID.value;
    }
    if(vstateID != null && vstateID.length > 0){
      vstateData = document.getElementById(vstateID);
    }
    if(vstateData != null){
      vstateData = vstateData.value;
    }
    if(vstateData == null){
      vstateData = "";
    }
    __theFormPostData = "__EVENTTARGET=&__EVENTARGUMENT=&__VIEWSTATE=&"  + vstateID + "=" + vstateData + "&";   
    
    WebForm_DoCallback('__Page', functionName + '|' + functionArguments, endFunction, context, callback_Error, false)        
}
//**************************************************
function callback_Error(message, context){
  alert(message)
}
//**************************************************
var mFormData = null
//**************************************************
function DoFormCallBack(functionName, dummy, endFunction){
    
    mFormData = new String()
    InitFormCallback()
    
    __theFormPostData = "__FORMCALLBACK=1&__EVENTTARGET=&__EVENTARGUMENT=&__VIEWSTATE=&" + mFormData
    WebForm_DoCallback('__Page', functionName, endFunction, null, null, false)        
}
//**************************************************
function InitFormCallback() {
    var count = theForm.elements.length;
    var element;
    for (var i = 0; i < count; i++) {
        element = theForm.elements[i];
        var tagName = element.tagName.toLowerCase();
        if (tagName == "input") {
            var type = element.type;
            
            if ((type == "text" || type == "hidden" || type == "password" || ((type == "checkbox" || type == "radio") && element.checked)) && (element.id != "__EVENTVALIDATION" && element.id != "__VIEWSTATE" && element.id != "__EVENTTARGET" && element.id != "__EVENTARGUMENT")) {
                
                InitCallbackAddField(element.name, element.value);
            }
        }
        else if (tagName == "select") {
            var selectCount = element.options.length;
            for (var j = 0; j < selectCount; j++) {
                var selectChild = element.options[j];
                if (selectChild.selected == true) {
                    InitCallbackAddField(element.name, element.value);
                }
            }
        }
        else if (tagName == "textarea") {
            InitCallbackAddField(element.name, element.value);
        }
    }
}
//**************************************************
function InitCallbackAddField(name, value) {
    mFormData += name + "=" + WebForm_EncodeCallback(value) + "&";
}
//**************************************************************************