function setCookie(c_name,value,expiredays)
  {
   var exdate=new Date();
   exdate.setDate(exdate.getDate()+expiredays);
   document.cookie=c_name+ "=" +escape(value)+ ((expiredays==null) ? "" : ";expires="+exdate.toGMTString());
  }
function HideContent_s(d)
 {
  document.getElementById(d).style.display = "none";
 }
function ShowContent_s(d)
 {
  document.getElementById(d).style.display = "block";
 }
function ReverseContentDisplay_s(d)
 {
  if(document.getElementById(d).style.display == "block")
   {
    document.getElementById(d).style.display = "none";
    visible = 0;
   }
    else
     {
      document.getElementById(d).style.display = "block";
      visible = 1;
     }
  cook_name = d + '_r';
  //alert(cook_name);
  visible = visible + '';
  setCookie(cook_name,visible,365);
 }
function intval( mixed_var, base )
 {
  var tmp;
 
  var type = typeof( mixed_var );
 
  if(type == 'boolean')
   {
    if (mixed_var == true) 
     {
      return 1;
     }
      else
       {
        return 0;
       }
   }
    else
     if(type == 'string')
      {
       tmp = parseInt(mixed_var * 1, 10);
       if(isNaN(tmp) || !isFinite(tmp))
        {
         return 0;
        }
         else
          {
           return tmp.toString(base || 10);
          }
      }
       else
        if(type == 'number' && isFinite(mixed_var) )
         {
          return Math.floor(mixed_var);
         }
          else
           {
            return 0;
           }
 }
function replaceAll( str, from, to )
 {
  var idx = str.indexOf( from );
  while ( idx > -1 )
   {
    str = str.replace( from, to );
    idx = str.indexOf( from );
   }
  return str;
 }
function convert_in(c)
 {
  return c * 2.54;
 }
function convert_cm(c)
 {
  return c * 0.393700787;
 }
function inchtocm(i)
 {
  i = replaceAll(i,',','.');
  document.getElementById('inchtocm').innerHTML = ' = ' + (i*2.54);
 }
function cmtoinch(i)
 {
  i = replaceAll(i,',','.');
  document.getElementById('cmtoinch').innerHTML = ' = ' + (i*0.393700787);
 }
function fatoce(i)
 {
  i = replaceAll(i,',','.');
  document.getElementById('fatoce').innerHTML = ' = ' + ( (5/9) * (i-32) );
 }
function cetofa(i)
 {
  i = replaceAll(i,',','.');
  document.getElementById('cetofa').innerHTML = ' = ' + ( (9/5) * i + 32 );
 }
function dkhtoppm(i)
 {
  i = replaceAll(i,',','.');
  document.getElementById('dkhtoppm').innerHTML = ' = ' + i * 17.857142857;
 }
function dkhtompl(i)
 {
  i = replaceAll(i,',','.');
  document.getElementById('dkhtompl').innerHTML = ' = ' + i * 0.357375271;
 }
function ppmtodkh(i)
 {
  i = replaceAll(i,',','.');
  document.getElementById('ppmtodkh').innerHTML = ' = ' + i / 17.857142857;
 }
function mpltodkh(i)
 {
  i = replaceAll(i,',','.');
  document.getElementById('mpltodkh').innerHTML = ' = ' + i / 0.357375271;
 }
function ppmtompl(i)
 {
  i = replaceAll(i,',','.');
  v = (i / 17.857142857) * 0.357375271;
  document.getElementById('ppmtompl').innerHTML = ' = ' + v;
 }
function mpltoppm(i)
 {
  i = replaceAll(i,',','.');
  v = (i / 0.357375271) * 17.857142857;
  document.getElementById('mpltoppm').innerHTML = ' = ' + v;
 }
function usgtoli(i)
 {
  i = replaceAll(i,',','.');
  document.getElementById('usgtoli').innerHTML = ' = ' + i * 3.7854118;
 }
function litousg(i)
 {
  i = replaceAll(i,',','.');
  document.getElementById('litousg').innerHTML = ' = ' + i * 0.264172051;
 }
function ukgtoli(i)
 {
  i = replaceAll(i,',','.');
  document.getElementById('ukgtoli').innerHTML = ' = ' + i * 4.54609188;
 }
function litoukg(i)
 {
  i = replaceAll(i,',','.');
  document.getElementById('litoukg').innerHTML = ' = ' + i * 0.219969157;
 }
function usgtoukg(i)
 {
  i = replaceAll(i,',','.');
  v = (i * 0.219969157) * 3.7854118;
  document.getElementById('usgtoukg').innerHTML = ' = ' + v;
 }
function ukgtousg(i)
 {
  i = replaceAll(i,',','.');
  v = (i * 0.264172051) * 4.54609188;
  document.getElementById('ukgtousg').innerHTML = ' = ' + v;
 }
function convert_li_usg(c)
 {
  return c * 0.264172051;
 }
function convert_li_ukg(c)
 {
  return c * 0.219969157;
 }
function calc_fish_tank(i1,i2,i3,i4,m1134,m1138,m1141,m1142,m1146,m1147,m1148,m1149,m1150,m1151)
 {
  h = replaceAll(i1,',','.');
  w = replaceAll(i2,',','.');
  l = replaceAll(i3,',','.');
  plocha = w * l;
  vyska  = h;

  if(w<l)
   total_length = intval(w/3);
    else
     total_length = intval(l/3);

  if(i4==2)
   {
    plocha       = convert_in(convert_in(plocha));
    vyska        = convert_in(h);
    jednot       = m1138;
    total_length = intval(convert_in(total_length));
    length_start = intval(convert_in(convert_cm(1)));
   }
    else
     {
      jednot       = m1134;
      length_start = 4;
     }
  rybky  = intval(plocha/45);
  vetary = m1142;
  if(length_start==0)
   length_start = 1;
  give_out = ' ';

  if( ( (rybky<20) || (vyska<20) ) && (vyska>0) )
   document.getElementById('fish_num_place').innerHTML = '<p>' + m1141 + '</p>';
   else
    {
     if(vyska>0)
      {
       for(i=length_start;i<=total_length;i++)
        {
         veta_this = replaceAll(vetary,"##TEMPLATE_FISH##",intval(rybky/i));
         if(i4==2)
          vloz_tu = convert_cm(i);
           else
            vloz_tu = i;
         veta_this = replaceAll(veta_this,"##TEMPLATE_NUMBER##",intval(Math.ceil(vloz_tu)));
         veta_this = replaceAll(veta_this,"##TEMPLATE_DIMENSION##",jednot);
         give_out = give_out + '<p>' + veta_this + '</p>';
        }

       objem    = plocha * vyska / 1000;
       give_out = give_out + "<p>" + m1147 + "<b>" + Math.round(objem*100)/100 + "</b> " + " " + m1146 + "(<b>" + Math.round(convert_li_usg(objem)*100)/100 + "</b> " + m1148 + " , <b>" + Math.round(convert_li_ukg(objem)*100)/100 + "</b> " + m1149 + ")</p>";

       watts    = m1150;

       watts    = replaceAll(watts,"##TEMPLATE_MIN_LIGHT##","<b>" + intval(objem/3.2) + "</b>");
       watts    = replaceAll(watts,"##TEMPLATE_MAX_LIGHT##","<b>" + intval(objem/2.1) + "</b>");
       give_out = give_out + "<p>" + watts + "</p>";

       watts    = m1151;
       watts    = replaceAll(watts,"##TEMPLATE_HEATER##","<b>" + intval(objem/0.81) + "</b>");
       give_out = give_out + "<p>" + watts + "</p>";
       document.getElementById('fish_num_place').innerHTML = give_out;
      }
    }
 }
function cyl_fish_tank(i1,i2,i3,m1134,m1138,m1141,m1142,m1146,m1147,m1148,m1149,m1150,m1151)
 {
  h             = replaceAll(i1,',','.');
  w             = replaceAll(i2,',','.');

  give_out      = ' ';

  plocha       = 3.14159265 * w * w;
  vyska        = h;
  total_length = intval(w/3);

  if(i3==2)
   {
    plocha       = convert_in(convert_in(plocha));
    vyska        = convert_in(h);
    jednot       = m1138;
    total_length = intval(total_length);
    length_start = intval(convert_in(convert_cm(1)));
   }
    else
     {
      jednot       = m1134;
      length_start = 4;
     }

  rybky  = intval(plocha/90);
  vetary = m1142;
  if(length_start==0)
   length_start = 1;
  if( ( (rybky<20) || (vyska<20) ) && (vyska>0) )
   document.getElementById('cyl_place').innerHTML = '<p>' + m1141 + '</p>';
    else
     {
      if(vyska>0)
       {
        for(i=length_start;i<=total_length;i++)
         {
          veta_this = replaceAll(vetary,"##TEMPLATE_FISH##",intval(rybky/i));
          if(i3==2)
           vloz_tu = convert_cm(i);
            else
             vloz_tu = i;
          veta_this = replaceAll(veta_this,"##TEMPLATE_NUMBER##",intval(Math.ceil(vloz_tu)));
          veta_this = replaceAll(veta_this,"##TEMPLATE_DIMENSION##",jednot);
          give_out = give_out + '<p>' + veta_this + '</p>';
         }

        objem = plocha*vyska/4/1000;

        give_out = give_out + "<p>" + m1147 + "<b>" + Math.round(objem*100)/100 + "</b> " + " " + m1146 + "(<b>" + Math.round(convert_li_usg(objem)*100)/100 + "</b> " + m1148 + " , <b>" + Math.round(convert_li_ukg(objem)*100)/100 + "</b> " + m1149 + ")</p>";

        watts = m1150;
        watts = replaceAll(watts,"##TEMPLATE_MIN_LIGHT##","<b>" + intval(objem/3.2) + "</b>");
        watts = replaceAll(watts,"##TEMPLATE_MAX_LIGHT##","<b>" + intval(objem/2.1) + "</b>");
        give_out = give_out + "<p>" + watts + "</p>";

        watts = m1151;
        watts = replaceAll(watts,"##TEMPLATE_HEATER##","<b>" + intval(objem/0.81) + "</b>");
        give_out = give_out + "<p>" + watts + "</p>";
        document.getElementById('cyl_place').innerHTML = give_out;
       }
     }
 }