CSS: image alignment [resolved]

how do i make an image appear in the center of the page, like text-align:center does for text.

Code:

---

.cImg
    {
    text-align:center;
    display:block;
    }



<img src="mendhak.gif" class="cImg">

---

Isn't it better to use

Code:

---

.cImg{
    margin-left: auto;
    margin-right: auto;
}

---

?

thanks for the help..

works great.