function onEnterUsernameInput(input) 
		{
			if (input.value == "Username") 
			{
				input.value = "";
				input.style.color = "black";
			}
			else input.style.color = "black";
		}
		function onExitUsernameInput(input)
		{
			if (input.value == "") 
			{
				input.value= "Username";
				input.style.color = "grey";
			}
			else input.style.color = "grey";
		}

		function onEnterPasswordInput(input)
		{
			if (input.value == "Password")
			{
				input.value = "";
				input.style.color = "black";
			}
			else input.style.color = "black";
		}
		function onExitPasswordInput(input)
		{
			if (input.value == "")
			{
				input.value= "Password";
				input.style.color = "grey";
			}
			else input.style.color = "grey";
		}