function getprodname(sku,targetnum) {
	//alert('sku is: '+sku+';target is: '+targetnum);
	var skuwaselem=document.getElementById('skuwas'+targetnum);
	var skuwas=skuwaselem.value;
	var targetelemid='name'+targetnum;
	//alert('sku is: '+sku+',skuwas is: '+skuwas);
	if (sku!=skuwas) {
		// get the product's name
		document.getElementById('qty' + targetnum).value = '';
		makeRequest(targetelemid,sku);
		
		skuwaselem.value=sku;
	}
} // end function getprodname


function makeRequest(targetelemid,sku) {
	var http_request = false;
	if (window.XMLHttpRequest) { // Mozilla, Safari,...
		http_request = new XMLHttpRequest();
		if (http_request.overrideMimeType) {
			http_request.overrideMimeType('text/xml');
			// See note below about this line
		}
	} else if (window.ActiveXObject) { // IE
		try {
			http_request = new ActiveXObject("Msxml2.XMLHTTP");
		} catch (e) {
			try {
				http_request = new ActiveXObject("Microsoft.XMLHTTP");
			} catch (e) {}
		}
	}
	if (!http_request) {
		alert('Giving up :( Cannot create an XMLHTTP instance');
		return false;
	}
	http_request.onreadystatechange = function() { 
		//alertContents(http_request);
		showContents(targetelemid,http_request)
		// not showing the result, just doing it behind the scenes
		};
	http_request.open('POST', '/ajah.getprodname.php', true);
	http_request.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded');
	http_request.send('sku='+sku);
}

function alertContents(http_request) {
	if (http_request.readyState == 4) {
		if (http_request.status == 200) {
			alert(http_request.responseText);
		} else {
			alert('There was a problem with the request.');
		}
	}
}

function showContents(targetelemid,http_request) {
	if (http_request.readyState == 4) {
		if (http_request.status == 200) {
			//alert(http_request.responseText);
			document.getElementById(targetelemid).innerHTML = http_request.responseText;
			if(http_request.responseText.substr(-9) != 'not found') {
				document.getElementById('qty' + targetelemid.substr(4)).value = 1;	
			}
		} else {
			alert('There was a problem with the request.');
		}
	}
}