function MyAlert(){
this.getSelectPosition=function getSelectPosition(obj) {
		var objLeft = obj.offsetLeft;
		var objTop = obj.offsetTop;
		var objParent = obj.offsetParent;
		while(objParent.tagName != "BODY") {
			objLeft += objParent.offsetLeft;
			objTop += objParent.offsetTop;
			objParent = objParent.offsetParent;
		}
		return([objLeft,objTop]);
}

this.alert=function myAlert(obj,content)
{
obj.style.color="#b0b0b0";
obj.value=content;
/*
var newMask =document.createElement("div");
newMask.name="myalert";
newMask.style.position = "absolute";
newMask.style.zIndex = "1";
newMask.className=obj.className;
newMask.style.width=obj.style.width;
newMask.style.height=18;
newMask.style.top =this.getSelectPosition(obj)[1]+1+"px";
newMask.style.left =this.getSelectPosition(obj)[0]+2+"px";
newMask.style.background = "#FFFFFF";
newMask.onmouseover=function(){this.removeNode(true);}
document.body.appendChild(newMask);
newMask.innerHTML="<div style='color:#b0b0b0'>"+content+"</div>";*/
}
this.closewin=function closewin() {
document.getElementById('myalert1').removeNode(true);
}
}

function alertTimeDiv(divid,content){
var obj=document.getElementById(divid);
var alertDiv=new MyAlert();
alertDiv.alert(obj,content);
//"<span style='color:#b0b0b0'>如:2009-01-01</span>"
}

function clearTime(obj) {
obj.style.color="#000000";
obj.value="";
}