function switchWriteMode(obj,initStr)
{
	if(obj.value == initStr)
	{
		obj.value = "";		
	}
	obj.className = "textField_OnEdit";
}

function switchValidate(obj,initStr)
{
	if(!obj.value)
	{
		obj.value = initStr;
	}
	obj.className = "textField_Normal";
}