var priceval = 0;
var slot1 = 0;
var slot2 = 1;
var digitdown = false;
var digitup = false;


function check_bitrate(bitrate_checked){
    if(!bitrate_checked){
	alert('Please choose bitrate');
	return false;
    }
    for(i=1;i<=5;i++){
	if(bitrate_checked!='bitrate_'+i)
	    document.getElementById('bitrate_'+i).checked=false;
    }
    calc();
}

function calc(){
    var bitrate = 0;
    var bitrate_checked = 0;
    for(i=1;i<=5;i++){
	if(document.getElementById('bitrate_'+i).checked){
	    bitrate = document.getElementById('bitrate_'+i).value;
	    bitrate_checked++;
	}
    }
    if(!bitrate_checked){
	alert('Please choose bitrate');
	return false;
    }
    if(bitrate_checked>1){
	alert('You can choose only one bit rate');
	return false;
    }
    
    
    priceval = bitrate*(parseInt(slot1)*100+parseInt(slot2)*10)*0.001*20;
    var slotsval = parseInt(slot1)*100+parseInt(slot2)*10;
    var price = '<font  style="font-size:20px;color:0099ff;background:cccccc;padding:4" >$'+priceval.toFixed(2)+'</font>';
    var selection = bitrate+" kbps x "+slotsval.toFixed(2)+" Slots:&nbsp;&nbsp;";
    
    document.getElementById('slotsval').value=slotsval;
    document.getElementById('selection').innerHTML = selection;
    document.getElementById('price').innerHTML = price;
    return true;
}

function IncDigit(digitnum){
    var bitrate_checked = 0;
    for(i=1;i<=5;i++){
	if(document.getElementById('bitrate_'+i).checked)
	    bitrate_checked++;
    }
    if(!bitrate_checked){
	alert('Please choose bitrate');
	return false;
    }
    if(bitrate_checked>1){
	alert('You can choose only one bit rate');
	return false;
    }

    if(digitnum=='digit1'){
	digitdown = true;
	Digit1.moveDown();
	if(!digitdown){
	    slot1++;
	    if(slot1==10)
		slot1 = 0;
	}
    }
    if(digitnum=='digit2'){
	digitdown = true;
	Digit2.moveDown();
	Digit3.moveDown();
	if(!digitdown){
	    slot2++;
	    if(slot2==10)
		slot2 = 0;
	}
    }
    return calc();
}
function DecDigit(digitnum){
    var bitrate_checked = 0;
    for(i=1;i<=5;i++){
	if(document.getElementById('bitrate_'+i).checked)
	    bitrate_checked++;
    }
    if(!bitrate_checked){
	alert('Please choose bitrate');
	return false;
    }
    if(bitrate_checked>1){
	alert('You can choose only one bit rate');
	return false;
    }

    if(digitnum=='digit1'){
        digitup = true;
        Digit1.moveUp();
        if(!digitup){
            slot1--;
	    if(slot1<0)
		slot1 = 9;
	}
    }
    if(digitnum=='digit2'){
        digitup = true;
        Digit2.moveUp();
        Digit3.moveUp();
        if(!digitup){
	    slot2--;
	    if(slot2<0)
		slot2 = 9;
	}
    }
    return calc();
}