jQuery.fn.placeholder=function(){return this.each(function(){var that=this;if(that.placeholder&&'placeholder'in document.createElement(that.tagName)){return;}
var placeholder=that.getAttribute('placeholder');var input=jQuery(that);if(that.value===''||that.value==placeholder){input.addClass('placeholder');that.value=placeholder;}
input.focus(function(){if(input.hasClass('placeholder')){this.value='';input.removeClass('placeholder')}});input.blur(function(){if(this.value===''){input.addClass('placeholder');this.value=placeholder;}else{input.removeClass('placeholder');}});that.form&&jQuery(that.form).submit(function(){if(input.hasClass('placeholder')){that.value='';}});});};