密码文本框

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  var showpass = false;
            if(dojo.byId('show-password')) {
                dojo.byId('show-password').onclick=function(){
                    var obj = dojo.byId('password');
                    var passInput=document.createElement('input');
                    if(showpass == false){
                        passInput.setAttribute('type','text');
                        showpass=true;
                    }else{
                        passInput.setAttribute('type','password');
                        showpass=false;
                    }
                    passInput.setAttribute('name',obj.getAttribute('name'));
                    passInput.setAttribute('id',obj.getAttribute('id'));
                    passInput.setAttribute('value',obj.value);
                    passInput.setAttribute('tabindex','2');
                    obj.parentNode.replaceChild(passInput,obj);
                    passInput.focus();
                }
            }