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<script type="text/javascript" language="javascript">function GetSample(){	// Тут создаем соединение.	var xmlHttp = false;	try { xmlHttp = new ActiveXObject("Msxml2.XMLHTTP"); }	catch (e) {		try { xmlHttp = new ActiveXObject("Microsoft.XMLHTTP"); }		catch (e2) { xmlHttp = false; }	}	if (!xmlHttp && typeof XMLHttpRequest != 'undefined') xmlHttp = new XMLHttpRequest();		var ownership_inputs = document.getElementsByName("ownership");		var ownership = 0;		var ownership_input_len = ownership_inputs.length;		for (var i = 0; i < ownership_input_len; i++) {			if (ownership_inputs[i].checked)			{				ownership = ownership_inputs[i].value;				break;			}		}		var patient_inputs = document.getElementsByName("patient");		var patient = 0;		var patient_input_len = patient_inputs.length;		for (var i = 0; i < patient_input_len; i++) {			if (patient_inputs[i].checked)			{				patient = patient_inputs[i].value;				break;			}		}		region = document.getElementById('sample_region').value;		specialty = document.getElementById('sample_specialty').value;					str = "clinic/ajax_sample.php?";			if(region>0) str = str+"region="+region+"&";			if(specialty>0) str = str+"specialty="+specialty+"&";			if(ownership>0) str = str+"ownership="+ownership+"&";			if(patient>0) str = str+"patient="+patient+"&";						if (region>0)			{			// Тут его используем.			xmlHttp.open("GET", "clinic/ajax_city.php?region="+region, false);			xmlHttp.send(null);					// Получаем ответ.			document.getElementById('city').innerHTML = xmlHttp.responseText;			city = document.getElementById('sample_city').value;			if(city>0) str = str+"city="+city+"&";			}			alert(str);					// Тут его используем.			xmlHttp.open("GET", str, false);		xmlHttp.send(null);			// Получаем ответ.		document.getElementById('clinic_all_result').innerHTML = xmlHttp.responseText;}</script>