var doit = true
function showm(ob,pict) {
  if(doit) {
    document.getElementById(ob).style.height = '220'
    document.getElementById(pict).src = 'arrowl.gif'
    doit = false
  }
  else {
    document.getElementById(ob).style.height = '25'
    document.getElementById(pict).src = 'arrowd.gif'
    doit = true
  }
}

function showm1(ob,pict) {
  if(doit) {
    document.getElementById(ob).style.height = '320'
    document.getElementById(pict).src = 'arrowl.gif'
    doit = false
  }
  else {
    document.getElementById(ob).style.height = '25'
    document.getElementById(pict).src = 'arrowd.gif'
    doit = true
  }
}

function showm2(ob,pict) {
  if(doit) {
    document.getElementById(ob).style.height = '490'
    document.getElementById(pict).src = 'arrowl.gif'
    doit = false
  }
  else {
    document.getElementById(ob).style.height = '25'
    document.getElementById(pict).src = 'arrowd.gif'
    doit = true
  }
}

function showm3(ob,pict) {
  if(doit) {
    document.getElementById(ob).style.height = '1050'
    document.getElementById(pict).src = 'arrowl.gif'
    doit = false
  }
  else {
    document.getElementById(ob).style.height = '25'
    document.getElementById(pict).src = 'arrowd.gif'
    doit = true
  }
}

function showm4(ob,pict) {
  if(doit) {
    document.getElementById(ob).style.height = '650'
    document.getElementById(pict).src = 'arrowl.gif'
    doit = false
  }
  else {
    document.getElementById(ob).style.height = '25'
    document.getElementById(pict).src = 'arrowd.gif'
    doit = true
  }
}