function clearText() {
    if(document.aspnetForm.ctl00_LeftNav1_zipcode.value == "Enter Zip Code"){
        document.aspnetForm.ctl00_LeftNav1_zipcode.value = ""
    }
}

function resetText2() {
    if(document.aspnetForm.ctl00_LeftNav1_zipcode.value == "")
        document.aspnetForm.ctl00_LeftNav1_zipcode.value = "Enter Zip Code"
}