very simple (probably in much need of improvement) Jquery plugin I've thrown together that will get you the value of an inline style property

jquery.inlineStyle.js

(function ($) {
    $.fn.inlineStyle = function (prop) {
         var styles = this.attr("style"),
             value;
         styles && styles.split(";").forEach(function (e) {
             var style = e.split(":");
             if ($.trim(style[0]) === prop) {
                 value = style[1];           
             }                    
         });   
         return value;
    };
}(jQuery));
//Returns value of "width" property or `undefined`
//var width = $("#someElem").inlineStyle("width");