模拟QQ邮箱中收信人拦的删除操作
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=gb2312" /><link href="css/mail.css" rel="stylesheet" type="text/css" /><script src="js/jquery.js" type="text/javascript"></script><script type="text/javascript">$(function(){$(".in_text").click(function(){var input = $("<input type='text' id='addr_text' onkeyup='IsNum(this)' readonly>");if($("#addr_text").length == 0){input.appendTo($(this));}$("#addr_text").focus();});})function GetInfor(obj){var name = $(obj).text();var phone = $(obj).attr("name");var div = $("<div class='per_infor' onclick='changeClass(this);'><span class='per_name'>"+name+"</span><span class='phone'>"+phone+"</span>;</div>");var input = $("<input type='text' id='addr_text' onkeyup='IsNum(this)'>");if($("#addr_text").length == 0){input.appendTo($(".in_text"));}$("#addr_text").before(div);$("#addr_text").focus();$(".per_infor").hover(function(){$(this).addClass("BgColor");},function(){$(this).removeClass("BgColor")});$("#addr_text").blur(function(){$(this).remove(); });/*$(".per_infor").click(function(){$("#addr_text").remove();$(this).addClass("selected");})*/}function changeClass(domObj) { $(".per_infor").removeClass("selected"); $("#addr_text").remove();$(domObj).addClass("selected");}function isKeyPressed(event){ if (event.keyCode==37) {var dom1 = $("#addr_text").prev(); $("#addr_text").after(dom1); } else if(event.keyCode==39 ) { var dom1 = $("#addr_text").next(); $("#addr_text").before(dom1); }if(event.keyCode==8 ){var dom1 = $("#addr_text").prev();if($(".selected").length >0){$(".selected").remove();}else{dom1.remove();}}else if(event.keyCode==46){var dom1 = $("#addr_text").next(); dom1.remove();} }</script><title>个人中心邮件</title></head><body onkeyup="isKeyPressed(event)"><div class="in_text"> </div></body></html>?