want to hide the search bar

i want to hide the search bar when i minimize the browser or when i vist the page with a mobile

#navbar-top {
	width: 100%;
	float: none;
	margin-left: 0px;
	position: absolute;
        /* to put it virtually inside the navbar-inner */
	top: 60px;
        /* needed 'cause navbar-inner has z-index 200 */
	 z-index: 210;
}
.navbar.notresp .row-fluid {
	/* leave the space for our searchbox*/
	margin-top: 60px;
}
#navbar-top #searchform {
    max-width: 300px;
	float: right;
}

#navbar-top #searchform input[type="text"] {
	/* if you use percentage here something breaks*/
    width: 200px;
}