jQuery.fn.fadeToggle = function(speed, easing, callback) {
   return this.animate({opacity: 'toggle'}, speed, easing, callback);

}; 


$(document).ready(function(){

//what block
$("a.whatblock_slidedown").click(function(){ $("div.portfolio_content").find("div.whatblock").slideToggle("normal"); });

//what illregular
$("a.whatillregular_slidedown").click(function(){ $("div.portfolio_content").find("div.whatillregular").slideToggle("normal"); });

//what mono
$("a.whatmono_slidedown").click(function(){ $("div.portfolio_content").find("div.whatmono").slideToggle("normal"); });

//what serif
$("a.whatserif_slidedown").click(function(){ $("div.portfolio_content").find("div.whatserif").slideToggle("normal"); });

//what extended
$("a.whatextended_slidedown").click(function(){ $("div.portfolio_content").find("div.whatextended").slideToggle("normal"); });

//what screen
$("a.whatscreen_slidedown").click(function(){ $("div.portfolio_content").find("div.whatscreen").slideToggle("normal"); });


});