var myartcl=document.getElementById('myartcl');var artclTxt = myartcl.innerHTML; var replObj = {'а':'a','е':'e','о':'o','р':'p','с':'c','х':'x','К':'K','Е':'E','Н':'H','М':'M','А':'A','Е':'E','О':'O','Р':'P','С':'C','Х':'X'}; artclTxt = artclTxt.replace(/[аеорсхКЕНМАЕОРСХ]/g, function(x){return replObj[x];}); myartcl.innerHTML = artclTxt;