function
 
selectCode(a){a=$(a).closest("dl").find(".cont_code,code")[0];if(window.getSelection){var
 
c=window.getSelection();if(c.setBaseAndExtent)c.setBaseAndExtent(a,0,a,a.innerText.length-1);else{window.opera&&a.innerHTML.substring(a.innerHTML.length-4)=="<BR>"&&(a.innerHTML+="
 ");var
b=document.createRange();b.selectNodeContents(a);c.removeAllRanges();c.addRange(b)}}else
 
document.getSelection?(c=document.getSelection(),b=document.createRange(),b.selectNodeContents(a),
c.removeAllRanges(),c.addRange(b)):document.selection&&(b=document.body.createTextRange(),b.moveToElementText(a),b.select())}
 
$(function(){

    $("dl.codebox:not(.spoiler,.hidecode)  > dd.code,
dl.codebox:not(.spoiler,.hidecode)  > dd >
code").closest("dl").find('dt').append('<span
onClick="selectCode(this)" class="selectCode">تحديد
المحتوي</span>');
});

.selectCode { float:right; text-transform: uppercase; cursor:pointer; }