.h:hover{margin-left:130px; transition:all .1s linear;

-moz-transition:all .1s linear;

-ms-transition:all .1s linear;

-o-transition:all .1s linear;

-webkit-transition:all .1s linear;}

.b:hover{margin-left:50px; margin-right:50px; transition:all .1s linear;

-moz-transition:all .1s linear;

-ms-transition:all .1s linear;

-o-transition:all .1s linear;

-webkit-transition:all .1s linear;}

.a:hover{margin-right:130px; transition:all .1s linear;

-moz-transition:all .1s linear;

-ms-transition:all .1s linear;

-o-transition:all .1s linear;

-webkit-transition:all .1s linear;}

.menu{

width: auto;

height:75px;

text-align:center;

margin:0px auto;

direction:rtl;

}

</style>

<div class="menu">

<a href="/" class="h"><img src="http://up.web-des.ir/up/xweb/n-theme/img/home.png" title="خانه" /></a>

<a href="/forum" class="b"><img src="http://up.web-des.ir/up/xweb/n-theme/img/forum345286.png" title="انجمن" /></a>

<a href="/Register" class="b"><img src="http://up.web-des.ir/up/xweb/n-theme/img/reg.png" title="عضویت" /></a>

<a href="/Login" class="b"><img src="http://up.web-des.ir/up/xweb/n-theme/img/login.png" title="ورود" /></a>

<a href="/contact" class="b"><img src="http://up.web-des.ir/up/xweb/n-theme/img/contact.png" title="تماس باما" /></a>

<a href="http://sourcegraph.rozblog.com/" class="b"><img src="http://up.web-des.ir/up/xweb/n-theme/img/tarah.png" title="طراح" /></a>

<a href="http://sourcegraph.rozblog.com/" class="a"><img src="http://up.web-des.ir/up/xweb/n-theme/img/codnevis.png" title="کد نویس" /></a>

</div>