鼠标滑过display:none 变为 display:block

鼠标滑过display:none   变为  display:block

<div class="col" onmouseover="overShow()" onmouseout="outHide()">

<div id="content" class="img-thumbnail" style="display: none;">

<script>

function overShow(){

document.getElementById("content").style.display = "block";

}

function outHide(){

document.getElementById("content").style.display = "none";

}

</script>