var xmlhttp;
try {
	xmlhttp = new ActiveXObject("Msxml2.XMLHTTP");
} catch (e) {
	try {
		xmlhttp = new ActiveXObject("Microsoft.XMLHTTP");
	} catch (E) {
		xmlhttp = false;
	} 
}

if (!xmlhttp && typeof XMLHttpRequest != 'undefined') { 
	xmlhttp = new XMLHttpRequest();
}

function ajax_fields(objId, field) {
	
	var obj = document.getElementById(objId);
	
	if(field == "username") {
		var value = document.form2.username.value;
	}
	if(value=="")
	{
		alert("Please enter username");
		document.form2.username.select()
		return false;
	}
	else
	{
	var server_page = "ajax_register.php?field="+field+"&value="+value;
}
	//alert(server_page);
	xmlhttp.open("GET", server_page);
	xmlhttp.onreadystatechange = function () {
		if (xmlhttp.readyState == 4 && xmlhttp.status == 200) {
			obj.innerHTML = xmlhttp.responseText;
		}
		
	}
	xmlhttp.send(null);
}


function ajax_product(objId1, field1) {
	//alert("hai");
	var obj = document.getElementById(objId1);
	
	if(field1 == "category") {
		var value = document.name4.category.options[document.name4.category.selectedIndex].value;
	}
	
	var server_page = "ajax_product.php?field="+field1+"&value="+value;
	//alert(server_page);
	xmlhttp.open("GET", server_page);
	xmlhttp.onreadystatechange = function ()
	{
		if (xmlhttp.readyState == 4 && xmlhttp.status == 200) {
		obj.innerHTML = xmlhttp.responseText;
		}
		
	}
	xmlhttp.send(null);
}