function submitOnEnter(evt, source) 
{
	if (evt.keyCode == 13)
	{
		var btnLogin;
		btnLogin = document.getElementById(source);
		btnLogin.focus();
	}
}

function clearTextbox(textBoxId ,oldValue)
{
	textBox = document.getElementById(textBoxId);
	if (textBox.value == oldValue)
	{
		textBox.value = '';
	}
}

function setUILanguage(cmbLanguageId)
{
	var obj = document.getElementById(cmbLanguageId);
	if (obj != null)
	{
		var lng;
		if (navigator.userLanguage != null)
			lng = navigator.userLanguage;
		else
		if (navigator.language != null)
			lng = navigator.language; // actually this returns system interface language, not user language
		
		if (lng != null)
		{
			lng = String(lng.split('-')[0]);
			
			try
			{
				obj.value = lng;
				__doPostBack(cmbLanguageId,'');
			}
			catch (e) {}
		}
	}
}