little position problem in IE 9 & 10

hi i install and use Admin Bar Login

there is no problem in Firefox

but in IE and Chrome the Login button load down of the bar !!

this is Css codes :

#adminloginform #wp-submit {
	position: relative;
	cursor: pointer;
	overflow: visible;
	text-align: center;
	white-space: nowrap;
	background: #ccc;
	background: -moz-linear-gradient(bottom, #aaa, #ccc);
	background: -webkit-gradient(linear, left bottom, left top, from(#aaa), to(#ccc));
	padding: 2px 10px;
	height: 22px;
	font: bold 12px sans-serif !important;
	color: #444 !important;
	text-shadow: 0px 1px 0px #ddd !important;
	border: 1px solid #626262;
	-moz-border-radius: 1em;
	-webkit-border-radius: 1em;
	border-radius: 0.5em;
	margin-right:19px;
	top:1px;
}

where is the problem ?? why this happend ?