var xmlHttp = false;

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 xmlSearch()
{
	frm = document.forms['srch'];
	
	clssId = frm.clssId.value;
	schoolsBegin = frm.schoolsBegin.value;
	schoolsEnd = frm.schoolsEnd.value;
	name = frm.name.value;
	gv = frm.gv.checked;
	
	if(clssId == 0 && schoolsBegin == 0 && schoolsEnd == 0 && name == '' && ! gv)
	{
		document.getElementById('srchd').style.visibility = 'hidden';
		document.getElementById('srchd').style.display = 'none';
	}
	else
	{
		document.getElementById('srchd').style.visibility = 'visible';
		document.getElementById('srchd').style.display = 'inline';
	}
	
	if(xmlHttp)
	{
		xmlHttp.open('GET', 'actionh.php?action=srch&clssId=' + clssId + '&schoolsBegin=' + schoolsBegin + '&schoolsEnd=' + schoolsEnd + '&name=' + name + '&gv=' + gv, true);
		xmlHttp.onreadystatechange = function ()
		{
			if(xmlHttp.readyState == 4)
			{
				document.getElementById('srchr').innerHTML = xmlHttp.responseText;
			}
		};
		xmlHttp.send(null);
	}
}