$('.circle').corner("5px");

$('.type_text').focus(function (){
 if(this.value == "Логин" || this.value == "Пароль")  
 {
  this.style.color = "black"; 
  this.style.fontStyle = "normal";
  this.style.width = "170px";
  this.value = "";
 }
}).blur(function (){
if(this.value == "")
 {
   this.style.color = "#a0a0a0"; 
   this.style.fontStyle = "italic";
   this.style.width = "170px";
   
   switch($(this).attr('name'))
   {
     case "password":
                 this.value = "Пароль";
                 break;
     case "login":
                 this.value = "Логин";
                 break;
   }
 }
});