A #javascript #bookmarklet : To change CSS

old_view.js

(function(){
	var is_old_view = false;
	var current_css_href = "./themes/SilverScreen2/css/common.css";
	var old_css_href = "./themes/SilverScreen2/css/common_old.css";
	var link = document.querySelector( '[href="' + current_css_href + '"]' );
	if ( link ) {
		var popin = new bm_popin( 3068137 );
		var switch_view = function() {
			is_old_view  = ! is_old_view ;
			if ( is_old_view ) {
				link.href = old_css_href;
				popin.title( 'Old View' );
			} else {
				link.href = current_css_href;
				popin.title( 'Current View' );
			}
		};
		switch_view();
		popin.add_button( 'Switch View', switch_view ); 
	}
}) ();