function doClick(buttonName, e) {
    var key;
    if (window.event)
        key = window.event.keyCode;    
    else
        key = e.which;    
    if (key == 13) {
        var btn = document.getElementById(buttonName);
        if (btn != null) { 
            btn.click();
            event.keyCode = 0
        }
    }
	return true;
}

 function validateForm() {
    var cs_zip = document.getElementById(cs_zip_code);
    var cs_zip2 = document.getElementById(cs_zip_code2);
    if ((cs_zip.value.length == 0 || cs_zip.value == "ENTER ZIP CODE") 
        && (cs_zip2.value.length == 0 || cs_zip2.value == "ENTER ZIP CODE")) {
        alert("Please enter your zip code.");
        cs_zip.value = "ENTER ZIP CODE";
        cs_zip2.value = "ENTER ZIP CODE";
        return false;
    } if (cs_zip.value.length != 0 && cs_zip.value != "ENTER ZIP CODE") {
        reZip = new RegExp(/(^\d{5}$)|(^\d{5}-\d{4}$)/);
        if (!reZip.test(cs_zip.value)) {
            cs_zip.value = ""; alert("Please enter a valid zip code.");
            cs_zip.value = "ENTER ZIP CODE";
            return false;
        }
    } if (cs_zip2.value.length != 0 && cs_zip2.value != "ENTER ZIP CODE") {
        reZip = new RegExp(/(^\d{5}$)|(^\d{5}-\d{4}$)/);
        if (!reZip.test(cs_zip2.value)) {
            cs_zip2.value = ""; alert("Please enter a valid zip code.");
            cs_zip2.value = "ENTER ZIP CODE";
            return false;
        }
    }
	_onclick_track_pixel();
   return true;
}

function clearfield(field, defaultvalue) {
    if (field.value == defaultvalue) 
        field.value = "";
}

function checkfield(field, defaultvalue) {
    if (field.value == "" || field.value == defaultvalue) 
        field.value = defaultvalue;
}