.login_btn{width:68px; height:29px; background-image:url('../../../images/login_btn.gif'); background-repeat:no-repeat; background-position:left top; display:block; border:0px; cursor:pointer; font-size:0px;}
.login_btn:hover{width:68px; height:29px; background-image:url('../../../images/login_btn.gif'); background-repeat:no-repeat; background-position:left -30px;display:block; border:0px; cursor:pointer; font-size:0px;}
.registration_btn{width:91px; height:29px; background-image:url('../../../images/ragister_btn.gif'); background-repeat:no-repeat; background-position:left top; display:block; border:0px; cursor:pointer; font-size:0px;}
.registration_btn:hover{width:91px; height:29px; background-image:url('../../../images/ragister_btn.gif'); background-repeat:no-repeat; background-position:left -30px;display:block; border:0px; cursor:pointer; font-size:0px;}
.send_btn{width:68px; height:29px; background-image:url('../../../images/send_btn.gif'); background-repeat:no-repeat; background-position:left top; display:block; border:0px; cursor:pointer; font-size:0px;}
.send_btn:hover{width:68px; height:29px; background-image:url('../../../images/send_btn.gif'); background-repeat:no-repeat; background-position:left -30px;display:block; border:0px; cursor:pointer; font-size:0px;}
.back_btn{width:68px; height:29px; background-image:url('../../../images/back_btn.gif'); background-repeat:no-repeat; background-position:left top; display:block; border:0px; cursor:pointer; font-size:0px;}
.back_btn:hover{width:68px; height:29px; background-image:url('../../../images/back_btn.gif'); background-repeat:no-repeat; background-position:left -30px;display:block; border:0px; cursor:pointer; font-size:0px;}
.pop_btn{float:right;border:none;}