function makeRequestReg()
{
	if((document.search_block.bYear.value) > 0)
	{

		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;
        }

		var url = "/getblock.php?year=" ;
//		 var url = "http://208.112.36.76/getblock.php?year="; // The server-side script
		 var conId=document.search_block.bYear.value;

        http_request.onreadystatechange = function() { alertContentsReg(http_request); };
        http_request.open('GET', url+escape(conId), true);
        http_request.send(null);
		http_request.onreadystatechange = function() { alertContentsReg(http_request); };
		}
		else
		{
			alert('Please select any year');
			document.search_block.bYear.focus();
			return false;
		}

    }

function alertContentsReg(http_request)
{

	if (http_request.readyState == 4)
	{
		if (http_request.status == 200)
		{

			if (http_request.responseText.indexOf('invalid') == -1)
			{
			var results = http_request.responseXML;
			//results = http.responseText;
			document.search_block.block_id.length=1;
			var region = results.getElementsByTagName("block");
				for(var i=0; i<region.length; i++)
				{
				o=new Option(region[i].getElementsByTagName('blockname')[0].childNodes[0].nodeValue,region[i].getElementsByTagName('blockid')[0].childNodes[0].nodeValue);
				document.search_block.block_id.options[document.search_block.block_id.options.length]=o;

				}

			}
			else
			{
			alert('there');
			}


		}
		else
		{
		alert('There was a problem with the request.');
		}
	}


}