+t attribs;
+s;(<input ([^>]+ )?type=(radio|"radio"|'radio')( [^>]+)?)>[ \t]+checked;\1 checked="checked">;g;
+s;(<input ([^>]+ )?type=(checkbox|"checkbox"|'checkbox')( [^>]+)?)>[ \t]+checked;\1 checked="checked">;g;
+s;(<option( [^>]+))>[ \t]+(checked|selected);\1 selected="selected">;g;