Input prompt in a textbox

Question Comments

Change the javascript to this to make the prompt text Gray

 function OnTextBoxGotFocus(textBox) {
            if (textBox.GetText() == __initialText) {
                textBox.SetText("");
                textBox.inputElement.style.color = 'black';
            }
        }
        function OnTextBoxLostFocus(textBox) {
            if (textBox.GetText() == "") {
                textBox.SetText(__initialText);
                textBox.inputElement.style.color = 'gray';
            }
            
        }

What if you have more than one text box on a page or form, how do you pass separate words for each text box to the function? It needs another parameter or something.