function fnClearTextboxesOnClick()
{
    inputs = document.getElementsByTagName('input')
    for(var i=0; i < inputs.length; i++)
    {
            
        if(inputs[i].getAttribute("type") == "text")
        {
            inputs[i].onfocus = new Function("fnClearMe(this)");
            inputs[i].onblur = new Function("fnSetDefault(this)");
        }
    }
}

function fnClearMe(formField)
{
    if(formField.defaultValue == formField.value)
    {
        formField.value = "";
    }
}

function fnSetDefault(formField)
{
    if(formField.value == "")
    {
        formField.value = formField.defaultValue;
    }
}

window.onload = fnClearTextboxesOnClick;