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<div id="sb-search" class="sb-search " ><form action="<?=HOME_URL?>"><input class="sb-search-input " onkeyup="buttonUp();" placeholder="Zoeken..." type="search" value="" name="s" id="search"><input class="sb-search-submit" type="submit"  value=""><span class="sb-icon-search"><i class="fa fa-search"></i></span></form></div><style>.sb-search {
    position: relative;
    width: 0;
    min-width: 25px;
    height: 25px;
    float: right;
    overflow: hidden;
    -webkit-transition: width 0.3s;
    -moz-transition: width 0.3s;
    transition: width 0.3s;
    -webkit-backface-visibility: hidden;
}

.sb-search-input {
    position: absolute;
    top: 0;
    right: 0px;
    border: none;
    outline: none;
    background: #fff;
    width: 100%;
    height: 25px;
    margin: 0;
    z-index: 10;
    padding: 0px;
    font-family: inherit;
    font-size: 16px;
    color: #222;
}
 
input[type="search"].sb-search-input {
    -webkit-appearance: none;
    -webkit-border-radius: 0px;
	padding: 7px 5px;
    font-family: "Open Sans", sans-serif;
    font-size: 14px;
}
.sb-search-input::-webkit-input-placeholder {
    color: #a0a0a0;
}
 
.sb-search-input:-moz-placeholder {
    color: #a0a0a0;
}
 
.sb-search-input::-moz-placeholder {
    color: #a0a0a0;
}
 
.sb-search-input:-ms-input-placeholder {
    color: #a0a0a0;
}

.sb-icon-search,
.sb-search-submit  {
    width: 25px;
    height: 25px;
    display: block;
    position: absolute;
    right: 0;
    top: 0;
    padding: 0;
    margin: 0;
    line-height: inherit;
    text-align: center;
    cursor: pointer;
}

.sb-search-submit {
    background: #fff; /* IE needs this */
    -ms-filter: "progid:DXImageTransform.Microsoft.Alpha(Opacity=0)"; /* IE 8 */
    filter: alpha(opacity=0); /* IE 5-7 */
    opacity: 0;
    color: transparent;
    border: none;
    outline: none;
    z-index: -1;
}

.sb-icon-search {
    color: rgba(54, 54, 54, 0.6);
    background: #e8e8e8;
    z-index: 90;
    font-size: 16px;
    font-family: fontawesome;
    speak: none;
    font-style: normal;
    font-weight: normal;
    font-variant: normal;
    text-transform: none;
    -webkit-font-smoothing: antialiased;
}
 
.sb-icon-search:before {
    content: "";
}

.sb-search.sb-search-open,
.no-js .sb-search {
    width: 200px;
}

.sb-search.sb-search-open .sb-icon-search,
.no-js .sb-search .sb-icon-search {
    background: #e8e8e8;
    color: rgba(54, 54, 54, 0.6);
    z-index: 11;
}

.sb-search.sb-search-open .sb-search-submit,
.no-js .sb-search .sb-search-submit {
/*    z-index: 10;*/
}</style>

function buttonUp(){
    var valux = $('.sb-search-input').val();
    valux = $.trim(valux).length;
    if(valux !== 0){
        $('.sb-search-submit').css('z-index','99');
    } else{
        $('.sb-search-input').val('');
        $('.sb-search-submit').css('z-index','-999');
    }
}

$(document).ready(function() {
    var submitIcon = $('.sb-icon-search');
    var submitInput = $('.sb-search-input');
    var searchBox = $('.sb-search');
    var isOpen = false;

    $(document).mouseup(function(){
        if(isOpen === true){
            submitInput.val('');
            $('.sb-search-submit').css('z-index','-999');
            submitIcon.click();
        }
    });

    submitIcon.mouseup(function(){
        return false;
    });

    searchBox.mouseup(function(){
        return false;
    });

    submitIcon.click(function(){
        if(isOpen === false){
            searchBox.addClass('sb-search-open');
            //searchBox.css('width','200px');
            isOpen = true;
            $('.sb-search-input').focus();
        } else {
            searchBox.removeClass('sb-search-open');
            //searchBox.css('width','0');
            isOpen = false;
        }
    });
});