Placeholder - Just a little js to backup html5's placeholder attribute.

placeholder.jquery.js

(function($){
	
    $.fn.placeHolder = function() {
	
	// check for placeholder attribute support in current browser
	var nativeSupport = "placeholder" in document.createElement("input");
	
        var restorePlaceHolder = function() {
            if (this.value == "") {
                $(this).addClass('inactive');
                if (!nativeSupport) this.value = this.placeholder;
            };
        };
	
        var clearText = function() {
        	$(this).removeClass('inactive');
            if (!nativeSupport && this.value == this.placeholder) this.value = "";
        };
	
        return this.focus(clearText).blur(restorePlaceHolder).blur();
    };
    
    // attach to elements using the html5 placeholder attribute
    $('input[placeholder],textarea[placeholder]').placeHolder();
})(jQuery);

placeholder.jquery.min.js

(function(a){a.fn.placeHolder=function(){var d=this.placeholder;var e=this.value;var f="placeholder" in document.createElement("input");var c=function(){if(this.value==""){a(this).addClass("inactive");if(!f){e=d}}};var b=function(){a(this).removeClass("inactive");if(!f&&e==d){e=""}};return this.focus(b).blur(c).blur()};a("input[placeholder],textarea[placeholder]").placeHolder()})(jQuery);