Show / hide value of password field?

Is there a way to show and hide the password in the password field? I want to make an checkbox that will control whether it is, but I do not know how.
For example, changing the type of item? I have not found anything like this in the documentation.

Try the next:
SCRIPT:

formData = [{ type: "password" , name: "pass", label: "Password:", width: "150", labelWidth: "150", labelHeight: "14", inputWidth: "150", inputHeight: "18" },{ type: "checkbox" , name: "chb", label: "Checkbox", width: "150", labelWidth: "150", labelHeight: "14" }]; myForm = new dhtmlXForm("myForm", formData); myForm.attachEvent("onChange", function(name, value, is_checked) { checked = myForm.isItemChecked("chb"); if(checked == true){ myForm.getInput("pass").type = "text"; } else{ myForm.getInput("pass").type = "password"; myForm.getInput("pass").focus(); } });
BODY:

<div id="myForm" style="height:500px;"></div>

Thanks!