鼠标移入移出事件解析

<a title="免费电话" target="_blank" class="box1_right_a14" onmouseover="display1()" onmouseout="disappear1()"><samp></samp>免费电话</a>
<div id="box" class="telephong" onmouseover="display1()" onmouseout="disappear1()">
<input id="telInput_2" class="tex" type="text" onblur="if (this.value=='')this.value='输入您的电话号码'" onfocus="if (this.value=='输入您的电话号码')this.value=''" value="输入您的电话号码" />
<input id="callBtn_2" class="sub" type="submit" value="免费回电"/>
</div>

<script>
function display1(){ document.getElementById("box").style.display="block"; }
function disappear1(){ document.getElementById("box").style.display="none"; }
</script>