function createRequestObject() {
    var ro;
    var browser = navigator.appName;
    if(browser == "Microsoft Internet Explorer"){
        ro = new ActiveXObject("Microsoft.XMLHTTP");
    }else{
        ro = new XMLHttpRequest();
    }
    return ro;
}
var http1 = createRequestObject();
function sndReq1(action) {
	//document.getElementById('searchResultsDiv').style.display = '';
    http1.open('get', action);
    http1.onreadystatechange = handleResponseNewsLetter;
    http1.send(null);
}
function handleResponseNewsLetter() {
    if(http1.readyState == 4){
		var res=trim_all(http1.responseText);
	
		if(res=='I')//if not exit inserted
		{
			document.getElementById('blank_img_id').innerHTML = '<img name="blank" src="images/news_letterimages/tick.jpg" width="23" height="32" border="0" id="blank" alt="" />';
			document.getElementById('n').value='Added, Thank You';
		}
		else if(res=='R')//if exit deleted
		{
			document.getElementById('blank_img_id').innerHTML = '<img name="blank" src="images/news_letterimages/cross.jpg" width="23" height="32" border="0" id="blank" alt="" />';
			document.getElementById('n').value='Removed, Thank You';
		}
		else
		{
			document.getElementById('blank_img_id').innerHTML = '<img name="blank" src="images/news_letterimages/blank.jpg" width="23" height="32" border="0" id="blank" alt="" />';
			document.getElementById('n').value='';
		}
	}
}
function doNewsLetter() {
	var val = 'chk_news_letter.php?n=' + document.getElementById('n').value; 
	sndReq1(val);
	return false;
}

function trim_all(s_value)
{
	return s_value.replace(/(^\s+)|(\s+$)/g, '');
}
function validateEmail(vfld)
{
	var tfld = trim_all(vfld);
	var email = /^[^@]+@[^@.]+\.[^@]*\w\w$/
	if (!email.test(tfld)) {
		return false;
	}
	var email2 = /^[A-Za-z][\w.-]+@\w[\w.-]+\.[\w.-]*[A-Za-z][A-Za-z]$/
	if (!email2.test(tfld)) {
		return false;
	}
	else
		return true;
};