return ret === "" ? "1" : ret;
}
}
}
},

// Don't automatically add "px" to these possibly-unitless properties
cssNumber: {
"columnCount": true,
"fillOpacity": true,
"flexGrow": true,
"flexShrink": true,
"fontWeight": true,
"lineHeight": true,
"opacity": true,
"order": true,
"orphans": true,
"widows": true,
"zIndex": true,
"zoom": true
},

// Add in properties whose names you wish to fix before
// setting or getting the value
cssProps: {
// normalize float css property
"float": support.cssFloat ? "cssFloat" : "styleFloat"
},

// Get and set the style property on a DOM Node
style: function( elem, name, value, extra ) {
// Don't set styles on text and comment nodes
if ( !elem || elem.nodeType === 3 || elem.nodeType === 8 || !elem.style ) {
return;
}

// Make sure that we're working with the right name
var ret, type, hooks,
origName = jQuery.camelCase( name ),
style = elem.style;

name = jQuery.cssProps[ origName ] || ( jQuery.cssProps[ origName ] = vendorPropName( style, origName ) );

// gets hook for the prefixed version
// followed by the unprefixed version
hooks = jQuery.cssHooks[ name ] || jQuery.cssHooks[ origName ];

// Check if we're setting a value
if ( value !== undefined ) {
type = typeof value;

// convert relative number strings (+= or -=) to relative numbers. #7345
if ( type === "string" && (ret = rrelNum.exec( value )) ) {
value = ( ret[1] + 1 ) * ret[2] + parseFloat( jQuery.css( elem, name ) );
// Fixes bug #9237
type = "number";
}

// Make sure that null and NaN values aren't set. See: #7116
if ( value == null || value !== value ) {
return;
}

// If a number was passed in, add 'px' to the (except for certain CSS properties)
if ( type === "number" && !jQuery.cssNumber[ origName ] ) {
value += "px";
}

// Fixes #8908, it can be done more correctly by specifing setters in cssHooks,
// but it would mean to define eight (for every problematic property) identical functions
if ( !support.clearCloneStyle && value === "" && name.indexOf("background") === 0 ) {
style[ name ] = "inherit";
}

// If a hook was provided, use that value, otherwise just set the specified value
if ( !hooks || !("set" in hooks) || (value = hooks.set( elem, value, extra )) !== undefined ) {

// Support: IE
// Swallow errors from 'invalid' CSS values (#5509)
try {
style[ name ] = value;
} catch(e) {}
}

} else {
// If a hook was provided get the non-computed value from there
if ( hooks && "get" in hooks && (ret = hooks.get( elem, false, extra )) !== undefined ) {
return ret;
}

// Otherwise just get the value from the style object
return style[ name ];
}
},

css: function( elem, name, extra, styles ) {
var num, val, hooks,
origName = jQuery.camelCase( name );

// Make sure that we're working with the right name
name = jQuery.cssProps[ origName ] || ( jQuery.cssProps[ origName ] = vendorPropName( elem.style, origName ) );

// gets hook for the prefixed version
// followed by the unprefixed version
hooks = jQuery.cssHooks[ name ] || jQuery.cssHooks[ origName ];

// If a hook was provided get the computed value from there
if ( hooks && "get" in hooks ) {
val = hooks.get( elem, true, extra );
}

// Otherwise, if a way to get the computed value exists, use that
if ( val === undefined ) {
val = curCSS( elem, name, styles );
}

//convert "normal" to computed value
if ( val === "normal" && name in cssNormalTransform ) {
val = cssNormalTransform[ name ];
}

// Return, converting to number if forced or a qualifier was provided and val looks numeric
if ( extra === "" || extra ) {
num = parseFloat( val );
return extra === true || jQuery.isNumeric( num ) ? num || 0 : val;
}
return val;
}
});

jQuery.each([ "height", "width" ], function( i, name ) {
jQuery.cssHooks[ name ] = {
get: function( elem, computed, extra ) {
if ( computed ) {
// certain elements can have dimension info if we invisibly show them
// however, it must have a current display style that would benefit from this
return rdisplayswap.test( jQuery.css( elem, "display" ) ) && elem.offsetWidth === 0 ?
jQuery.swap( elem, cssShow, function() {
return getWidthOrHeight( elem, name, extra );
}) :
getWidthOrHeight( elem, name, extra );
}
},

set: function( elem, value, extra ) {
var styles = extra && getStyles( elem );
return setPositiveNumber( elem, value, extra ?
augmentWidthOrHeight(
elem,
name,
extra,
support.boxSizing && jQuery.css( elem, "boxSizing", false, styles ) === "border-box",
styles
) : 0
);
}
};
});

if ( !support.opacity ) {
jQuery.cssHooks.opacity = {
get: function( elem, computed ) {
// IE uses filters for opacity
return ropacity.test( (computed && elem.currentStyle ? elem.currentStyle.filter : elem.style.filter) || "" ) ?
( 0.01 * parseFloat( RegExp.$1 ) ) + "" :
computed ? "1" : "";
},

set: function( elem, value ) {
var style = elem.style,
currentStyle = elem.currentStyle,
opacity = jQuery.isNumeric( value ) ? "alpha(opacity=" + value * 100 + ")" : "",
filter = currentStyle && currentStyle.filter || style.filter || "";

// IE has trouble with opacity if it does not have layout
// Force it by setting the zoom level
style.zoom = 1;

// if setting opacity to 1, and no other filters exist - attempt to remove filter attribute #6652
// if value === "", then remove inline opacity #12685
if ( ( value >= 1 || value === "" ) &&
jQuery.trim( filter.replace( ralpha, "" ) ) === "" &&
style.removeAttribute ) {

// Setting style.filter to null, "" & " " still leave "filter:" in the cssText
// if "filter:" is present at all, clearType is disabled, we want to avoid this
// style.removeAttribute is IE Only, but so apparently is this code path.