function inc(input)
{
  var name_input = document.getElementById('mark'+input)
  name_input.value++
}
function decr(input)
{
  
  var name_input = document.getElementById('mark'+input)
  if(name_input.value<=0)
  {
  	 name_input.value=0
  }
  else
  {
	 name_input.value--
  }
  
}
function start()
{
	var sub_start = document.getElementById('ejector')
	sub_start.value = 1
}