Optimization for Jquery Hide & Show functions

gistfile1.js

var displayDump = Array();

$.fn.hide = function() {
	var selector = this.selector;
	displayDump[selector] = Array();
	
	$(this).each(function( index ) {
	  displayDump[selector].push($(selector)[index].innerHTML);
	  $(this).css("display","none").html("");
	});
};

$.fn.show = function() {
	var selector = this.selector;

	for(i=0;i<displayDump[selector].length;i++){
		$(selector).html(displayDump[selector][i]);
	}

	$(this).each(function( index ) {
	  $(this).css("display","block");
	  $(this).html(displayDump[selector][index]);
	});
};

You can use it same functions
$(obj).hide() or show()