function clear_text(objId)
{
	if (objId == 'txtUsername'  && document.getElementById(objId).value == 'username')
	{
		
		document.getElementById(objId).value = '';
	}
	else if (objId == 'txtPassword'  && document.getElementById(objId).value == 'password..')
	{
		document.getElementById(objId).value = '';
	}	
}

function restore_text(objId)
{
	if (objId == 'txtUsername'  && document.getElementById(objId).value == '')
	{
		
		document.getElementById(objId).value = 'username';
	}
	else if (objId == 'txtPassword'  && document.getElementById(objId).value == '')
	{
		document.getElementById(objId).value = 'password..';
	}
}

function checkDetails(objForm)
{	
	if(objForm.txtUsername.value=='' || objForm.txtUsername.value=='username')
	{		
		alert("Please enter your username.");
		objForm.txtUsername.focus();
		return false;
	}
	else if(objForm.txtPassword.value=='')
	{		
		alert("Please enter your password.");
		objForm.txtPassword.focus();
		return false;
	}
	else 
	{
		return true;
	}
}