var xmlHttp;

function InsertSearchCategoryComboLevel1(id){
	xmlHttp=GetXmlHttpObject()
	if (xmlHttp==null){
	  alert ("Please install the newest version for your browser!");
	  return;
	} 
	
	if(id==0){
		ob = document.getElementById('search_combo_level1');
		ob.innerHTML = '';
		return '';
	}
	
	var url=HTTP + "?insert_search_category=" + id + "&level=1";
	
	//create a delay of 1 second so that the loading gif can be showed
	xmlHttp.onreadystatechange=putValueSearchCategoryComboLevel1;
	
	xmlHttp.open("GET",url,true);
	xmlHttp.send(null);
} 

function putValueSearchCategoryComboLevel1(){
	if (xmlHttp.readyState==4){
		response=xmlHttp.responseText;	
		
		ob = document.getElementById('search_combo_level1');
		ob.innerHTML = response;
		ob = document.getElementById('search_combo_level2');
		ob.innerHTML = '';
	}
}

function InsertSearchCategoryComboLevel2(id){
	xmlHttp=GetXmlHttpObject()
	if (xmlHttp==null){
	  alert ("Please install the newest version for your browser!");
	  return;
	} 
	
	if(id==0){
		ob = document.getElementById('search_combo_level2');
		ob.innerHTML = '';
		return '';
	}
	
	var url=HTTP + "?insert_search_category=" + id + "&level=2";
	
	//create a delay of 1 second so that the loading gif can be showed
	xmlHttp.onreadystatechange=putValueSearchCategoryComboLevel2;
	
	xmlHttp.open("GET",url,true);
	xmlHttp.send(null);
} 

function putValueSearchCategoryComboLevel2(){
	if (xmlHttp.readyState==4){
		response=xmlHttp.responseText;	
		
		ob = document.getElementById('search_combo_level2');
		ob.innerHTML = response;
	}
}