(function($)
{$.fn.blink=function(options)
{var defaults={delay:500};var options=$.extend(defaults,options);return this.each(function()
{var obj=$(this);setInterval(function()
{if($(obj).css("visibility")=="visible")
{$(obj).css('visibility','hidden');}
else
{$(obj).css('visibility','visible');}},options.delay);});}}(jQuery))