function checkUserExist(){
				UserManager.ajaxCheckUserExist(dwr.util.getValue("usernametxt"), function(data){
					if (data == "true") 
						dwr.util.setValue("usernameTip", "user exist");
					else 
						dwr.util.setValue("usernameTip", "user not exist");
				});
			}
			
function wellSellAddToCookie(code,indx,obj){
			    num = document.getElementById("wellSell"+indx).value;
				  addToCookie(code,num,obj);
				  document.getElementById("wellSell"+indx).value = 1;
			}