define([

"../core",
"../var/support"

], function( jQuery, support ) {

(function() {

var pixelPositionVal, boxSizingReliableVal,
        docElem = document.documentElement,
        container = document.createElement( "div" ),
        div = document.createElement( "div" );

if ( !div.style ) {
        return;
}

// Support: IE9-11+
// Style of cloned element affects source element cloned (#8908)
div.style.backgroundClip = "content-box";
div.cloneNode( true ).style.backgroundClip = "";
support.clearCloneStyle = div.style.backgroundClip === "content-box";

container.style.cssText = "border:0;width:0;height:0;top:0;left:-9999px;margin-top:1px;" +
        "position:absolute";
container.appendChild( div );

// Executing both pixelPosition & boxSizingReliable tests require only one layout
// so they're executed at the same time to save the second computation.
function computePixelPositionAndBoxSizingReliable() {
        div.style.cssText =
                // Support: Firefox<29, Android 2.3
                // Vendor-prefix box-sizing
                "-webkit-box-sizing:border-box;-moz-box-sizing:border-box;" +
                "box-sizing:border-box;display:block;margin-top:1%;top:1%;" +
                "border:1px;padding:1px;width:4px;position:absolute";
        div.innerHTML = "";
        docElem.appendChild( container );

        var divStyle = window.getComputedStyle( div, null );
        pixelPositionVal = divStyle.top !== "1%";
        boxSizingReliableVal = divStyle.width === "4px";

        docElem.removeChild( container );
}

// Support: node.js jsdom
// Don't assume that getComputedStyle is a property of the global object
if ( window.getComputedStyle ) {
        jQuery.extend( support, {
                pixelPosition: function() {

                        // This test is executed only once but we still do memoizing
                        // since we can use the boxSizingReliable pre-computing.
                        // No need to check if the test was already performed, though.
                        computePixelPositionAndBoxSizingReliable();
                        return pixelPositionVal;
                },
                boxSizingReliable: function() {
                        if ( boxSizingReliableVal == null ) {
                                computePixelPositionAndBoxSizingReliable();
                        }
                        return boxSizingReliableVal;
                },
                reliableMarginRight: function() {

                        // Support: Android 2.3
                        // Check if div with explicit width and no margin-right incorrectly
                        // gets computed margin-right based on width of container. (#3333)
                        // WebKit Bug 13343 - getComputedStyle returns wrong value for margin-right
                        // This support function is only executed once so no memoizing is needed.
                        var ret,
                                marginDiv = div.appendChild( document.createElement( "div" ) );

                        // Reset CSS: box-sizing; display; margin; border; padding
                        marginDiv.style.cssText = div.style.cssText =
                                // Support: Firefox<29, Android 2.3
                                // Vendor-prefix box-sizing
                                "-webkit-box-sizing:content-box;-moz-box-sizing:content-box;" +
                                "box-sizing:content-box;display:block;margin:0;border:0;padding:0";
                        marginDiv.style.marginRight = marginDiv.style.width = "0";
                        div.style.width = "1px";
                        docElem.appendChild( container );

                        ret = !parseFloat( window.getComputedStyle( marginDiv, null ).marginRight );

                        docElem.removeChild( container );
                        div.removeChild( marginDiv );

                        return ret;
                }
        });
}

})();

return support;

});