jquery > 所有浏览器兼容 placeholder
<input type="text" id="header_search_text" placeholder="输入人名" onfocus="" /><script language="javascript"><!--$(document).ready(function () {addPlaceHolder($('#header_search_text'));});function addPlaceHolder(obj){obj.val(obj.attr('placeholder'));obj.click(function () {var obj = $(this);if (obj.val() == obj.attr('placeholder')) {obj.val('');}});obj.blur(function () {var obj = $(this);if ($.trim(obj.val()) == '') {obj.val(obj.attr('placeholder'));}});}//--></script>
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