window.onload = function() {
	
    var obj = document.getElementById("username");
        obj.setAttribute("value", "E-Mail");
        obj.onfocus = new Function("if(this.value=='E-Mail') this.value='';");
        obj.onblur = new Function("if(this.value=='') { this.value='E-Mail'; }");

    var obj = document.getElementById("passwordVisible");
        obj.setAttribute("value", "Passwort");
        obj.onfocus = new Function("if(this.value=='Passwort') { " +
          " this.setAttribute('class', 'loginPassword'); " +
          " document.getElementById('password').setAttribute('class', 'loginPasswordVisible'); " +
          " document.getElementById('password').focus(); " +
        "}");

     var obj = document.getElementById("password");
        obj.onblur = new Function("if(this.value=='') { " +
          " this.setAttribute('class', 'loginPassword'); " +
          " document.getElementById('passwordVisible').setAttribute('class', 'loginPasswordVisible'); " +
        "}");
}