var spk_data = new Array();
var manufacturers = new Array();
manufacturers[0] = 'JBL';
spk_data[0] = new Array('JBL','JRX112i',8,500,0);
spk_data[1] = new Array('JBL','JRX115',8,500,0);
spk_data[2] = new Array('JBL','JRX125',4,1000,0);
spk_data[3] = new Array('JBL','JRX118S',4,750,0);
spk_data[4] = new Array('JBL','SF112i',8,500,0);
spk_data[5] = new Array('JBL','SF115',8,500,0);
spk_data[6] = new Array('JBL','SF125',4,1000,0);
spk_data[7] = new Array('JBL','EON1500',8,450,0);
spk_data[8] = new Array('JBL','MP212',8,500,0);
spk_data[9] = new Array('JBL','MP215',8,500,0);
spk_data[10] = new Array('JBL','MP225',4,1000,0);
spk_data[11] = new Array('JBL','MP255S',4,1000,0);
spk_data[12] = new Array('JBL','MP410',8,600,0);
spk_data[13] = new Array('JBL','MRX518S',4,1000,0);
manufacturers[1] = 'Yamaha';
spk_data[14] = new Array('Yamaha','S112V',8,350,0);
spk_data[15] = new Array('Yamaha','S115V',8,500,0);
spk_data[16] = new Array('Yamaha','S215V',4,1000,0);
spk_data[17] = new Array('Yamaha','SM10V',8,250,0);
spk_data[18] = new Array('Yamaha','SM12V',8,350,0);
spk_data[19] = new Array('Yamaha','SM15V',8,500,0);
spk_data[20] = new Array('Yamaha','SW115V',8,500,0);
spk_data[21] = new Array('Yamaha','SW118V',8,600,0);
spk_data[22] = new Array('Yamaha','C112V(A)',8,350,0);
spk_data[23] = new Array('Yamaha','C115V(A)',8,500,0);
spk_data[24] = new Array('Yamaha','C215V',4,1000,0);
spk_data[25] = new Array('Yamaha','CM10V',8,250,0);
spk_data[26] = new Array('Yamaha','CM12V',8,350,0);
spk_data[27] = new Array('Yamaha','CW115V',8,500,0);
spk_data[28] = new Array('Yamaha','CW118V',8,600,0);
spk_data[29] = new Array('Yamaha','BR10',8,250,0);
spk_data[30] = new Array('Yamaha','BR12',8,300,0);
spk_data[31] = new Array('Yamaha','BR15',8,400,0);
spk_data[32] = new Array('Yamaha','BR12M',8,300,0);
spk_data[33] = new Array('Yamaha','BR15M',8,400,0);
manufacturers[2] = 'Peavey';
spk_data[34] = new Array('Peavey','PV115',8,400,0);
spk_data[35] = new Array('Peavey','PV215',4,700,0);
spk_data[36] = new Array('Peavey','PV112',8,400,0);
spk_data[37] = new Array('Peavey','PV118',8,400,0);
spk_data[38] = new Array('Peavey','PV15M',8,500,0);
spk_data[39] = new Array('Peavey','PV12M',8,500,0);
spk_data[40] = new Array('Peavey','PR15',8,400,0);
spk_data[41] = new Array('Peavey','PR12',8,400,0);
spk_data[42] = new Array('Peavey','PR12N',8,400,0);
spk_data[43] = new Array('Peavey','PR Sub',8,400,0);
spk_data[44] = new Array('Peavey','SP2',8,1000,0);
manufacturers[3] = 'EV';
spk_data[45] = new Array('EV','Force i',8,500,0);
spk_data[46] = new Array('EV','Force i Monitor',8,500,0);
manufacturers[4] = 'B-52';
spk_data[47] = new Array('B-52','LX-1515',4,800,0);
spk_data[48] = new Array('B-52','LX-218',8,550,0);
manufacturers[5] = 'Mackie';
spk_data[49] = new Array('Mackie','C200',8,350,0);
spk_data[50] = new Array('Mackie','C300z',8,500,0);
manufacturers[6] = 'Cerwin Vega';
spk_data[51] = new Array('Cerwin Vega','EL36B',8,500,0);
manufacturers[7] = 'Turbosound';
spk_data[52] = new Array('Turbosound','TXD081',8,400,0);
var data_loaded = true;

// amplifier data
var amp_models = new Array('GX3','GX5');
var amp_links = new Array('http://www.qscaudio.com/products/amps/gx/gx.htm','http://www.qscaudio.com/products/amps/gx/gx.htm');
var amp_images = new Array('http://www.qscaudio.com/images/products/gx/GX3_front_th.jpg','http://www.qscaudio.com/images/products/gx/GX5_front_th.jpg');
var amp_rating_2min = new Array(0,0);
var amp_rating_2max = new Array(0,0);
var amp_rating_4min = new Array(299,500);
var amp_rating_4max = new Array(499,1001);
var amp_rating_8min = new Array(240,376);
var amp_rating_8max = new Array(375,630);
var amp_2ohm_specs = new Array('not recommended','not recommended');
var amp_4ohm_specs = new Array('425 W @ 4 ohms','700 W @ 4 ohms');
var amp_8ohm_specs = new Array('300 W @ 8 ohms','500 W @ 8 ohms');

var info = "";

function set_menus(advanced){
	frm1 = document.loudspeaker_model;
	if(data_loaded){
		// populate manufacturer menu
		for(i=0;i<manufacturers.length;i++){
			frm1.manufacturer.options.length ++;
			frm1.manufacturer.options[frm1.manufacturer.options.length-1].value= manufacturers[i];
			frm1.manufacturer.options[frm1.manufacturer.options.length-1].text= manufacturers[i];	
			if(advanced){
				frm1.manufacturer2.options.length ++;
				frm1.manufacturer2.options[frm1.manufacturer.options.length-1].value= manufacturers[i];
				frm1.manufacturer2.options[frm1.manufacturer.options.length-1].text= manufacturers[i];	
			}
		}
		
	} else {
		// no data	
		frm1.manufacturer.options[0].text= "NO DATA";
		if(advanced){
			frm1.manufacturer2.options[0].text= "NO DATA";
		}
	}
	if(advanced){
		//just in case the browser remembers the setting...
		second_speaker();
	} else {
		// start with empty 8-ball for simple mode
		show_8ball(0);	
	}
	// beginning state for highlights
	document.getElementById('manufborder').style.backgroundColor = "#FFFF00"; 
	document.getElementById('btn1border').style.backgroundColor = "#FFFFFF"; 
	document.getElementById('modelborder').style.backgroundColor = "#FFFFFF";
}
function set_models(which_spkr,manuf){
	frm1 = document.loudspeaker_model;
	if(which_spkr==1){
		field = frm1.model;
		document.getElementById('modelborder').style.backgroundColor = "#FFFF00";  
	} else {
		field = frm1.model2;
		document.getElementById('modelborder2').style.backgroundColor = "#FFFF00"; 
		
	}
	document.getElementById('manufborder').style.backgroundColor = "#FFFFFF"; 
	document.getElementById('btn1border').style.backgroundColor = "#FFFFFF"; 
	field.options.length = 1;
	field.options[0].text= "Select Model"
	
	document.getElementById('btn1border').style.border = "none"; 
	for(i=0;i<spk_data.length;i++){
		row = spk_data[i];
		if(row[0] == manuf){
			field.options.length ++;
			field.options[field.options.length-1].value = i;
			field.options[field.options.length-1].text = row[1] ;
		}	
	}
	if(field.options.length == 1){
		// no data
		field.options[0].text= "NO DATA";	
	}
}

function second_speaker(){
	frm1 = document.loudspeaker_model;
	if(frm1.num_speakers[1].checked){
		// show second speaker selection
		document.getElementById('speaker2').style.display = "block";
	} else {
		// hide second speaker selection
		document.getElementById('speaker2').style.display = "none";
	}
}

function finish_model(advanced){
		document.getElementById('modelborder').style.backgroundColor = "#FFFFFF";
		document.getElementById('manufborder').style.backgroundColor = "#FFFFFF"; 
		if(advanced){
			document.getElementById('modelborder2').style.backgroundColor = "#FFFFFF";
		}
		document.getElementById('btn1border').style.backgroundColor = "#FFFF00";  
}

function get_amps_by_model(advanced){
	frm1 = document.loudspeaker_model;
	selected_spk = frm1.model.options[frm1.model.selectedIndex].value;
	num_speakers = 1;
	if(advanced){
		if(frm1.num_speakers[1].checked){
			num_speakers = 2;
		}
	}
	document.getElementById('btn1border').style.backgroundColor = "#FFFFFF"; 
	if(selected_spk != ""){
		if(selected_spk < spk_data.length){
			speaker_data = spk_data[selected_spk];
			manuf = speaker_data[0];
			model = speaker_data[1];
			imp = speaker_data[2];
			pwr = speaker_data[3];
			// compare power rating of the selected speaker with each amp
			if(imp == 4 && num_speakers == 2){
				// 2 ohms to amp
				// split power between speakers
				min = amp_rating_2min/2;
				max = amp_rating_2max/2;
				specs_array = amp_2ohm_specs;
			} else if(imp == 4){
				// 4 ohms
				min = amp_rating_4min;
				max = amp_rating_4max;
				specs_array = amp_4ohm_specs;
			} else if(imp == 8 && num_speakers == 2){	
				// 4 ohms to amp
				// split power between speakers
				min = amp_rating_4min/2;
				max = amp_rating_4max/2;
				specs_array = amp_4ohm_specs;
			} else {
				// 8 ohm loudspeaker
				min = amp_rating_8min;
				max = amp_rating_8max;
				specs_array = amp_8ohm_specs;
			}
			candidates = new Array();
			for(i=0;i<min.length;i++){
				if(pwr > min[i] &&  pwr < max[i]){
					candidates[candidates.length] = new Array(amp_models[i],amp_images[i],amp_links[i],specs_array[i]);
				}	
			}
			speaker_info = "Selected loudspeakers: ";
			speaker_info += "<b>" + manuf + " " + model + "</b> ";
			speaker_info += "(" + imp + " ohms, " + pwr + " watts program power rating)";
			if(num_speakers == 2 && imp == 8){
				speaker_info += "<br>2 loudspeakers per side (4 ohms per amp channel)";
			} else if(num_speakers == 2 && imp == 4){
				speaker_info += "<br>2 loudspeakers per side (2 ohms per amp channel)";
			}
			if(advanced){
				thinking();
				setTimeout('show_results(candidates,speaker_info)',1500);
			} else {
				// simple results	
				// 8-ball
				
				show_results_simple(candidates,speaker_info);
			}
			
		} else {
			// selected speaker not in array
			document.getElementById('info').innerHTML = "Error: Invalid loudspeaker selection";
		}
	} else {
		// need to choose a model
		document.getElementById('info').innerHTML = "<b>Please select a loudspeaker model</b>";	
	}
	
}

function thinking(){
	document.getElementById('results').innerHTML = "<img src='../amp_selector/calculating.gif' alt='calculating'>";
}

function show_results(candidates,speaker_info){
	var results = "";
	
	results += speaker_info + "<br><br>";
	
	if(candidates.length == 0){
		results += "We could not find a suitable amplifier for your loudspeaker selection";
	} else if(candidates.length == 1){	
		results += "The best amplifier to power your loudspeakers is:";
	} else {
		results += "These amplifiers are suitable to power your loudspeakers:";
	}
	for(i=0;i<candidates.length;i++){
		amp = candidates[i];
		results += "<br><div style='width:400px;text-align:left'><img src='"+ amp[1] +"' alt='"+ amp[0] +"' align=left hspace=5 vspace=5>";
		results += "<a href='"+ amp[2] +"'><b>"+amp[0]+"</b></a><br>";
		results += amp[3];
		results += "<a href='"+ amp[2] +"'>Click here for more info</a></div>";
	}
	
	document.getElementById('results').innerHTML = results;
}

function show_results_simple(candidates,speaker_info){
	// show info
	document.getElementById('info').innerHTML = speaker_info + "<br><br>";

	var amp = candidates[0];
	
info = "<div class=\"rounded\" style=\"width:540px;background-color:#1D46B1;background-image:none;color:#FFFFFF\">\n<div class=\"c1\"></div><div class=\"c2\"></div><div class=\"c3\"></div>\n";
info += "<div class=\"inner\" style=\"font-size:15px\">\n";
info += "The <b>"+amp[0]+"</b> is recommended based on your loudspeakers' power handling rating.\n";
info += "</div><div class=\"c3\"></div><div class=\"c2\"></div><div class=\"c1\"></div></div>\n";

	
	setTimeout("document.getElementById('info').innerHTML += info",3500);
	
	var choice = candidates[0];
	//choices: 0 = static 8-ball image
	// 1 = GX3
	// 2 = GX5
	state = 0;
	if(choice[0] == "GX3"){
		state = 1;	
	} else if (choice[0] == "GX5") {
		state = 2;	
	}
	
	show_8ball(state);
	
}

function show_8ball(state){
	// output flash embedded object
	var qry = "";
	if(state == 1){
		qry = "?choice=1";
	} else if (state == 2){
		qry = "?choice=2";
	}
	
	var results = "";
	results += "<object classid=\"clsid:D27CDB6E-AE6D-11cf-96B8-444553540000\" codebase=\"http://download.macromedia.com/pub/shockwave/cabs/flash/swflash.cab#version=6,0,29,0\" width=\"600\" height=\"500\">";
    results += "                <param name=\"movie\" value=\"../amp_selector/8ball.swf"+qry+"\">";
    results += "                <param name=\"quality\" value=\"high\">";
     results += " 				<param name=\"wmode\" value=\"opaque\">";
    results += "                <embed src=\"../amp_selector/8ball.swf"+qry+"\" quality=\"high\" wmode=\"opaque\" pluginspage=\"http://www.macromedia.com/go/getflashplayer\" type=\"application/x-shockwave-flash\" width=\"600\" height=\"500\"></embed>";
     results += "</object>";
	
	document.getElementById('results').innerHTML = results;
}