it in.and search it. 

Step 3:
once you found tag,paste following Code above/before  


//
var custom_pinit_button = "Your Pinterest Button URL HERE";
var pinit_button_position = "center";
var pinit_button_before = "";
var pinit_button_after = "";
//]]>



//
eval(function(p,a,c,k,e,r){e=function(c){return(c35?String.fromCharCode(c+29):c.toString(36))};if(!''.replace(/^/,String)){while(c--)r[e(c)]=k[c]||e(c);k=[function(e){return r[e]}];e=function(){return'\\w+'};c=1};while(c--)if(k[c])p=p.replace(new RegExp('\\b'+e(c)+'\\b','g'),k[c]);return p}('1i(1j).1k(r($){$(\'M\').1l(\'\');$(\'#7-6-P\').1m();3 l;3 m;3 n;$(\'.A\').1n(r(){m=$(\'.A\').E(F);n=$(\'.A\').G(F);$(\'.A\').1o()});3 o=$(\'#7-6-P\').1p().1q("1r.1s.14");o!=-1&&15();r 15(){$(\'.s-16 6,.H-M 6,.s-17 6\').1t(\'.18,.18 6\').1u(r(){$(\'.7-4\').t("4","D");19(l);3 a=$(q);3 b=1a(a.t("Q-u"));3 c=1a(a.t("Q-v"));3 d;3 e;1v(1w){B\'1x\':d=a.9().u+a.G(F)/2-n/2;e=a.9().v+a.E(F)/2-m/2;C;B\'1y\':d=a.9().u+b+5;e=a.9().v+c+a.E()-m-5;C;B\'1z\':d=a.9().u+b+5;e=a.9().v+c+5;C;B\'1A\':d=a.9().u+b+a.G()-n-5;e=a.9().v+c+a.E()-m-5;C;B\'1B\':d=a.9().u+b+a.G()-n-5;e=a.9().v+c+5;C}3 f=a.1C(\'O\');3 g=a.1D(\'.H,.1E,.s\').R(\'.H-S,.s-S,.s-1F\');3 h=g.1G();w(T U===\'V\'){U=\'\'}w(T W===\'V\'){W=\'\'}w(g.R(\'a\').1H){X=g.R(\'a\').I(\'Y\').1b(/\\#.+\\b/1c,"")}Z{X=$(1I).I(\'Y\').1b(/\\#.+\\b/1c,"")}3 i=\'1d>\';3 j=a.11().26(\'a\')?a.11():a;w(!j.y().27(\'7-4\')){j.28(i);w(T l===\'V\'){j.y(\'.7-4\').I("1g","q.p.10=1;q.p.4=\'12\'")}Z{j.y(\'.7-4\').I("1g","q.p.10=1;q.p.4=\'12\';19(29)")}}3 k=j.y(".7-4");k.t({"u":d,"v":e});k.t("4","12");k.L().1h(2a,1.0,r(){$(q).2b()})});$(\'.s-16 6,.H-M 6,.s-17 6\').1f(\'2c\',r(){w($.2d.2e){3 a=$(q).y(\'.7-4\');3 b=$(q).11(\'a\').y(\'.7-4\');l=2f(r(){a.L().t("4","D");b.L().t("4","D")},2g)}Z{$(\'.7-4\').L().1h(0,0.0)}})}});',62,141,'|||var|visibility||img|pinit||position||||||||||||||||style|this|function|entry|css|top|left|if|none|next||loadpinitbutton|case|break|hidden|outerWidth|true|outerHeight|post|attr|box|shadow|stop|body|class|src|button|margin|find|title|typeof|pinit_button_before|undefined|pinit_button_after|pinitURL|href|else|opacity|parent|visible|custom_pinit_button|com|hoverCheck|content|summary|nopin|clearTimeout|parseInt|replace|gi|div|display|on|onmouseover|fadeTo|jQuery|document|ready|append|hide|load|remove|html|indexOf|helplogger|blogspot|not|mouseenter|switch|pinit_button_position|center|topright|topleft|bottomright|bottomleft|prop|closest|hentry|header|text|length|location|absolute|index|9999|http|pinterest|pin|create|url|media|description|block|outline|target|_blank|pinimg|moz|webkit|background|transparent|padding|border|Pin|Pinterest|is|hasClass|after|pinitOnHover|300|show|mouseleave|browser|msie|setTimeout|3000'.split('|'),0,{}))
//]]>



Step 4:
Now you are almost done.

Step 5:
Now you have to enter your own pinterest button url to proper place in code.for that copy one of the following button url and paste into instead of Your Pinterest Button URL HERE.anyway,If you have your own pinterst button url,paste it.It's OK.