var srch_itm;
var max_srch;

function createValidQueryString_search() {
	
	var queryString = "key="+idglb;
	return queryString;
}

function firstAction_search(){
	
	//hide_id('iframe');
	idglb= document.getElementById('search_box').value ;
}

function doRequestUsingPOST_search() {
	firstAction_search();
	createXMLHttpRequest();
	var url = 'http://ar.wikiporsesh.ir/wiki/php/ajaxphp/search.php?'+ new Date().getTime();
	var queryString = createValidQueryString_search();
	xmlHttp.open("POST", url, true);
	xmlHttp.onreadystatechange = validHandleStateChange_search;
	xmlHttp.setRequestHeader("Content-Type",
	"application/x-www-form-urlencoded;");
	xmlHttp.send(queryString);

}


function validHandleStateChange_search() {
		
	if(xmlHttp.readyState == 4) {
		if(xmlHttp.status == 200) {
			validParseResults_search();
		}
		else{
			if( xmlHttp.status == 404 ){
				hide_id('load');
				var item;
				frame=document.getElementById('iframe');
				frame.contentWindow.document.body.innerHTML = '<p align="center" ><font face="Tahoma" color="red" >صفحه مورد نظر يافت نشد</font></p>' ;
				show_id('iframe');

			}	
		}
	}
}


function validParseResults_search() {

	if( xmlHttp.responseText!='' ){
		tmp_txt=xmlHttp.responseText;
		var arr_response = tmp_txt.split("<div");
		max_srch=arr_response.length-1;
		srch_itm=0;
		show_id('search_drop');
		document.getElementById('search_drop').innerHTML=xmlHttp.responseText;
		

	//alert(xmlHttp.responseText);
	//idglb2=xmlHttp.responseText;
	//addEvent(window,"load",searchfield);
	//return xmlHttp.responseText;
	}
	else{
		hide_id('search_drop');
	}
}



//--------------------------------------------------------------------------------------
//document.getElementById('search_drop').style.top=document.getElementById('search_box').offsetTop+document.getElementById('search_box').offsetHeight+'px';
document.getElementById('search_drop').style.width=document.getElementById('search_box').offsetWidth-6+'px';
document.getElementById('search_drop').style.left=document.getElementById('search_box').offsetLeft+'px';

function msmark_s(id){
	document.getElementById(id).style.backgroundColor='green';
	document.getElementById(id).style.color='white';
}

function msunmark_s(id){
	document.getElementById(id).style.backgroundColor='white';
	document.getElementById(id).style.color='black';
}

function select_s(id,submit){
	if( srch_itm>0 ) document.getElementById('search_box').value=document.getElementById(id).innerHTML;
    str=document.getElementById('search_box').value;
    hide_id('search_drop');
	//if( submit==1 ) document.searchform.submit();
    if( submit==1 ) {
    	str=str.replace(/ /g,"+");
    	<!--
			window.location='http://ar.wikiporsesh.ir/'+str;
		//-->
    }
}


function msnavList(action){
	if( srch_itm!=0 ) msunmark_s('s'+srch_itm);
	if( srch_itm==0 || srch_itm==1 ){
		if( action=='down' ) srch_itm++;
		else if( action=='up' ) srch_itm=max_srch;
	}
	else if( srch_itm==max_srch  ){
		if( action=='down' ) srch_itm=1;
		else if( action=='up' ) srch_itm--;
	}
	else{
		if( action=='down' ) srch_itm++;
		else if( action=='up' ) srch_itm--;
	}
	msmark_s('s'+srch_itm);
}


function getKeyCode(e){
		var code;
		if (!e) var e = window.event;
		if (e.keyCode) code = e.keyCode;
		return code;
	};

document.getElementById('search_box').onkeypress = function(e){
				
	var key = getKeyCode(e);
		
	if(key == 13){ // enter
    		select_s('s'+srch_itm,1);
            return false;
       
	};	
};

document.getElementById('search_box').onkeyup = function(e){
			
	var key = getKeyCode(e);
	switch(key){
	case 13://enter
		//select_s('s'+srch_itm);
		//return false;
		break;			
	case 27:  // esc
		hide_id('search_drop');
		break;				
	case 38: // up
		show_id('search_drop');
		msnavList("up");
		break;
	case 40: // down
		show_id('search_drop');
		msnavList("down");		
		break;
	default:
		if( document.getElementById('search_box').value ){
			doRequestUsingPOST_search();	
		}
		else{
			hide_id('search_drop');
		}
		break;
	};
};