Get value of css width for class

GetDivWidthFromCss.js

function width(that)
{
	var $class = $(that).hasClass('col-md-12') ? 'col-md-9' : 'col-md-12';
	var element = $('<div/>').addClass($class).appendTo('body').wrap('<div style="display: none"></div>');
	var width = element.css('width');
	element.remove();
	return width;
}