页面加载通过javascript来修改控件属性

function changeFormElementStatus(tagNames) {
            var tagNameArr = tagNames.split(",");
            for (var j = 0; j < tagNameArr.length; j++) {
                var tagName = tagNameArr[j];
                var tags = document.getElementsByTagName(tagName);
                for (var i = 0; i < tags.length; i++) {
                    var tag = tags[i];
                    if (tag.disabled) {
                        if (tagName != "select") {
                            tag.disabled = false;
                            tag.readOnly = true;
                            if (tag.onclick != null && tag.onclick.toString().indexOf("WdatePicker") != -1) {
                                tag.onclick = "";
                            }
                        }
                        else {
                            //tag.disabled=false;
                            //tag.onfocus="this.defaultIndex=this.selectedIndex;";
                            //tag.onchange="this.selectedIndex=this.defaultIndex;";
                        }
                    }
                }
            }
        }
    </script>
    <script src="../../Script/My97DatePicker/WdatePicker.js" type="text/javascript"></script>
</head>
<body onload="changeFormElementStatus('input,select,textarea');">