Before:
_=$_=+[],$=+!_,_$=!_+'',_$$=!$+'',__=({})+'',_$_=($/_)+'',__$=__[$+$+$+$+$];$_$=[][__$+__[$]+_$_[$]+__$+_$$[$]+_$[_]];$__=($_$+'')[$$$$=(($+$)+''+(($<<$)*($+$+$)))]+($_$+'')[$$$$-$]+_$$[$]+_$$[$+$];__$$=(__$=$_$+'')[$_++]+__$[$_++]+__$[$_++]+__$[$_++]+__$[$_++]+__$[$_++]+__$[$_++]+__$[$_++];$_$()[_][$__](''+_$$[_]+__[$]+_$[$]+'($$=_,$$$=[];$$<($<<($+$+$));$$++)$$$[$$]=($<<$$)');_$_$=$_$()[_][$__](''+_$$[_]+__[$]+_$[$]+'($$ '+_$_[($<<($+$))+$]+_$_[$]+' $_$()[_])'+_$_[($<<($+$))+$]+_$$[_]+'($$[_]==_$$[$+$+$]&&$$[$]==$__[_]&&$$[$+$]==_$$[$+$+$])$$');$__$=__$$+' (){'+_$[$]+_$[$+$+$]+_$[_]+__$$[$]+_$[$]+_$_[$]+'(';_$__=$_$()[_][$__](''+_$$[_]+__[$]+_$[$]+'($$ '+_$_[($<<($+$))+$]+_$_[$]+' $_$()[_])'+_$_[($<<($+$))+$]+_$$[_]+'($$[_]==_$_$[($<<($+$))*($+$+$)]&&$$[$]==_$[$+$+$]&&$$[$+$]==_$[_]&&$$[$<<($+$)]==__[$])$$');_$$$=$_$()[_][$__](''+_$$[_]+__[$]+_$[$]+'($$ '+_$_[($<<($+$))+$]+_$_[$]+' $_$()[_])'+_$_[($<<($+$))+$]+_$$[_]+'($$[_]==__[$]&&$$[$]==_$_[$]&&$$[$+$]==__[$+$+$+$+$])$$');__$_=$_$()[_][$__](_$_$[($<<($+$+$))-$]+_$[_]+_$[$]+_$_[$+$+$]+_$_[$]+_$_$[($<<($+$))*($+$+$)]+'.'+_$$[_]+_$[$]+__[$]+_$__[($+$+$+$+$)]+_$__[$+$+$]+_$$$[$+$+$]+_$$[$]+_$[$]+_$__[$+$+$]+__[$]+_$__[($+$+$+$+$)*($+$)]+_$[$+$+$]);;$_$()[_][$__]('$_$_='+__$$+'($$,$_$_$,$_$_$_$_){'+_$[$]+_$[$+$+$]+_$[_]+__$$[$]+_$[$]+_$_[$]+' $$.'+_$[$]+_$[$+$+$]+__$_($$$[($+$+$)*($+$)]+$$$[$+$+$+$+$]+$$$[($+$+$+$)])+_$$[$+$]+_$$[$]+_$$$[$+$]+_$[$+$+$]+'($_$_$,$_$_$_$_)'+'}');_$$_=__$_($$$[$+$+$+$+$]+$+$);$_$$=__$_(($<<($+$+$+$))+(($<<($+$))+$+$+$)<<($+$))+_$$_;;___=__$_((($+$+$)+(($+$)*($+$+$+$+$)))*($+$+$));$_$()[_][$__]("($$_="+$__$+"$_$_('_=$_=+[],$=+!_,_$=!_+______,_$$=!$+______,__=({})+______,_$_=($/_)+______,__$=__[$+$+$+$+$];$_$=[][__$+__[$]+_$_[$]+__$+_$$[$]+_$[_]];$__=($_$+______)[$$$$=(($+$)+______+(($<<$)*($+$+$)))]+($_$+______)[$$$$-$]+_$$[$]+_$$[$+$];__$$=(__$=$_$+______)[$_++]+__$[$_++]+__$[$_++]+__$[$_++]+__$[$_++]+__$[$_++]+__$[$_++]+__$[$_++];$_$()[_][$__](______+_$$[_]+__[$]+_$[$]+___($$=_,$$$=[];$$<($<<($+$+$));$$++)$$$[$$]=($<<$$)___);_$_$=$_$()[_][$__](______+_$$[_]+__[$]+_$[$]+___($$ ___+_$_[($<<($+$))+$]+_$_[$]+___ $_$()[_])___+_$_[($<<($+$))+$]+_$$[_]+___($$[_]==_$$[$+$+$]&&$$[$]==$__[_]&&$$[$+$]==_$$[$+$+$])$$___);$__$=__$$+___ (){___+_$[$]+_$[$+$+$]+_$[_]+__$$[$]+_$[$]+_$_[$]+___(___;_$__=$_$()[_][$__](______+_$$[_]+__[$]+_$[$]+___($$ ___+_$_[($<<($+$))+$]+_$_[$]+___ $_$()[_])___+_$_[($<<($+$))+$]+_$$[_]+___($$[_]==_$_$[($<<($+$))*($+$+$)]&&$$[$]==_$[$+$+$]&&$$[$+$]==_$[_]&&$$[$<<($+$)]==__[$])$$___);_$$$=$_$()[_][$__](______+_$$[_]+__[$]+_$[$]+___($$ ___+_$_[($<<($+$))+$]+_$_[$]+___ $_$()[_])___+_$_[($<<($+$))+$]+_$$[_]+___($$[_]==__[$]&&$$[$]==_$_[$]&&$$[$+$]==__[$+$+$+$+$])$$___);__$_=$_$()[_][$__](_$_$[($<<($+$+$))-$]+_$[_]+_$[$]+_$_[$+$+$]+_$_[$]+_$_$[($<<($+$))*($+$+$)]+___.___+_$$[_]+_$[$]+__[$]+_$__[($+$+$+$+$)]+_$__[$+$+$]+_$$$[$+$+$]+_$$[$]+_$[$]+_$__[$+$+$]+__[$]+_$__[($+$+$+$+$)*($+$)]+_$[$+$+$]);;$_$()[_][$__](___$_$_=___+__$$+___($$,$_$_$,$_$_$_$_){___+_$[$]+_$[$+$+$]+_$[_]+__$$[$]+_$[$]+_$_[$]+___ $$.___+_$[$]+_$[$+$+$]+__$_($$$[($+$+$)*($+$)]+$$$[$+$+$+$+$]+$$$[($+$+$+$)])+_$$[$+$]+_$$[$]+_$$$[$+$]+_$[$+$+$]+___($_$_$,$_$_$_$_)___+___}___);_$$_=__$_($$$[$+$+$+$+$]+$+$);$_$$=__$_(($<<($+$+$+$))+(($<<($+$))+$+$+$)<<($+$))+_$$_;',$_$()[_][$__](__$_(''+($<<($+$+$))+($+$),''+$+_+$,''+$+_+($+$+$),''+($+$+$+$+$+$)+($+$+$)*($+$+$),''+$+($+$)+_,''+$+$+($+$))+'('+__$_((($+$+$)+(($+$)*($+$+$+$+$)))*($+$+$))+'___'+__$_((($+$+$)+(($+$)*($+$+$+$+$)))*($+$+$))+','+__$_(''+($+$+$)+(($+$+$)*($+$+$)),''+$+_+($+$+$),''+$+_+($+$+$+$+$),''+($+$+$)+(($+$+$)*($+$+$)))+')'),___)+';___=__$_((($+$+$)+(($+$)*($+$+$+$+$)))*($+$+$));$_$()[_][$__](\"($$_='+$_$_($_$_(($$_+''),_$$_,$_$$),$__$,_$$_+'+$__$+'+_$$_)+')()'+_$$_+')')})()")

After

Execute Quine

What is a Quine? According to wiki, “A quine is a computer program which takes no input and produces a copy of its own source code as its only output” (http://en.wikipedia.org/wiki/Quine_(computing)). Well this is a special type of quine in which the source code uses only the following characters:

{}()+* <[]$_.-/\",=&';!

The text box on the left has the original script, when you run the Quine, its output will be placed on the right. Try it for yourself.