function $(id)
{
 return document.getElementById(id);
}
function SubStringText(obj,length) 
{
    if (obj.value.length > length) 
    {
        obj.value = obj.value.substring(0, length);
        alert('文字字数已经超过了'+length+'字!!!');
    }
}
function move(obj1,obj2)
{
	var div1 = document.getElementById(obj1);
	var div2 = document.getElementById(obj2);
	if(div2 != null)
	{
		div1.childNodes[0].childNodes[0].childNodes[0].appendChild(div2.childNodes[0]);
	}
}