خدمت شما:<div id="div1" style="width: 80px; height: 20px; background-color: red;" onmouseover="document.getElementById('div2').style.display = 'block';document.getElementById('div1').style.display = 'none'">
</div><div id="div2" style="width: 80px; height: 20px; background-color: blue;display...