function chkShop_m()
{
  var i,j=0,hinweis="";

  if ((document.shop.elements[0].options[0].selected  == true && document.shop.elements[0].length > 1) ||
      (document.shop.elements[4].options[0].selected  == true && document.shop.elements[4].length > 1) ||
      (document.shop.elements[8].options[0].selected  == true && document.shop.elements[8].length > 1) ||
      (document.shop.elements[12].options[0].selected == true && document.shop.elements[12].length > 1) ||
      (document.shop.elements[16].options[0].selected == true && document.shop.elements[16].length > 1) ||
      (document.shop.elements[20].options[0].selected == true && document.shop.elements[20].length > 1))
  {
    for(i=0;i<21;i+=4)
    {
      hinweis = "Bitte rechts einen Wert für "; 
      if(document.shop.elements[i].options[0].selected == true && document.shop.elements[i].length > 1) 
      {
        if(i==0) 
         hinweis += "die Sphäre";
        if(i==4) 
         hinweis += "die Addition";
        if(i==8) 
         hinweis += "den Radius";
        if(i==12) 
         hinweis += "den Durchmesser";
        if(i==16) 
         hinweis += "die Farbe";
        if(i==20) 
         hinweis += "den Inhalt";

        hinweis += " eingeben";
        alert(hinweis);
        document.shop.elements[i].focus();
        i=21;
        return false;
      }
    }
  }
  else
  {  
    if ((document.shop.elements[24].options[0].selected == false && document.shop.elements[].options[0].selected == false && document.shop.elements[32].options[0].selected == false && document.shop.elements[36].options[0].selected == false && document.shop.elements[40].options[0].selected == false && document.shop.elements[44].options[0].selected == false) ||
        (document.shop.elements[24].options[0].selected == true  && document.shop.elements[].options[0].selected == true  && document.shop.elements[32].options[0].selected == true  && document.shop.elements[36].options[0].selected == true  && document.shop.elements[40].options[0].selected == true  && document.shop.elements[44].options[0].selected == true))
    {i=0;}
    else
    {
      for(j=24;j<45;j+=4)
      {
        hinweis = "Bitte links einen Wert für "; 
        if(document.shop.elements[j].options[0].selected == true)
        {
          if(j==24)
           hinweis+="die Sphäre";
          if(j==)
           hinweis+="die Addition";
          if(j==32)
           hinweis+="den Radius";
          if(j==36)
           hinweis+="den Durchmesser";
          if(j==40)
            hinweis+="die Farbe";
          if(j==44)
           hinweis+="den Inhalt";
          hinweis+=" eingeben";
          alert(hinweis);
          document.shop.elements[j].focus();
          j=45;
          return false;
        }
      } 
    }
  }
}


function chkShop_pf()
{
  var hinweis="";

  hinweis = document.shop.elements[0].value + " " + document.shop.elements[0].length;
  alert(hinweis);

  if(document.shop.elements[0].options[0].selected == true && document.shop.elements[0].length > 1)
  {
    hinweis = "Bitte einen Wert für den Inhalt eingeben"; 
    alert(hinweis);
    document.shop.elements[0].focus();
    return false;
  }
}


function chkShop_s()
{
  var i,j=0,hinweis="";

  if ((document.shop.elements[0].options[0].selected  == true && document.shop.elements[0].length > 1) ||
      (document.shop.elements[4].options[0].selected  == true && document.shop.elements[4].length > 1) ||
      (document.shop.elements[8].options[0].selected  == true && document.shop.elements[8].length > 1) ||
      (document.shop.elements[12].options[0].selected == true && document.shop.elements[12].length > 1) ||
      (document.shop.elements[16].options[0].selected == true && document.shop.elements[16].length > 1))
  {
    for(i=0;i<17;i+=4)
    {
      hinweis = "Bitte rechts einen Wert für "; 
      if (document.shop.elements[i].options[0].selected == true && document.shop.elements[i].length > 1) 
      {
        if (i==0)	hinweis += "die Sphäre";
        if (i==4)	hinweis += "den Radius";
        if (i==8)	hinweis += "den Durchmesser";
        if (i==12)	hinweis += "die Farbe";
        if (i==16)	hinweis += "den Inhalt";

        hinweis += " eingeben";
        alert(hinweis);
        document.shop.elements[i].focus();
        i=17;
        return false;
      }
    }
  }
  else
  {
    if ((document.shop.elements[20].options[0].selected == false && document.shop.elements[24].options[0].selected == false && document.shop.elements[].options[0].selected == false && document.shop.elements[32].options[0].selected == false && document.shop.elements[36].options[0].selected == false) ||
        (document.shop.elements[20].options[0].selected == true && document.shop.elements[24].options[0].selected == true && document.shop.elements[].options[0].selected == true && document.shop.elements[32].options[0].selected == true && document.shop.elements[36].options[0].selected == true))
    {i=0;}
    else
    {
      for(j=20;j<37;j+=4)
      {
        hinweis = "Bitte links einen Wert für "; 
        if(document.shop.elements[j].options[0].selected == true)
        {
          if(j==20)
           hinweis+="die Sphäre";
          if(j==24)
           hinweis+="den Radius";
          if(j==)
           hinweis+="den Durchmesser";
          if(j==32)
           hinweis+="die Farbe";
          if(j==36)
           hinweis+="den Inhalt ";
          hinweis+=" eingeben";
          alert(hinweis);
          document.shop.elements[j].focus();
          j=37;
          return false;
        }
      }
    }
  }
}


function chkShop_t()
{
  var i,j=0,hinweis="";

  if ((document.shop.elements[0].options[0].selected  == true && document.shop.elements[0].length > 1) ||
      (document.shop.elements[4].options[0].selected  == true && document.shop.elements[4].length > 1) ||
      (document.shop.elements[8].options[0].selected  == true && document.shop.elements[8].length > 1) ||
      (document.shop.elements[12].options[0].selected == true && document.shop.elements[12].length > 1) ||
      (document.shop.elements[16].options[0].selected == true && document.shop.elements[16].length > 1) ||
      (document.shop.elements[20].options[0].selected == true && document.shop.elements[20].length > 1) ||
      (document.shop.elements[24].options[0].selected == true && document.shop.elements[24].length > 1))
  {
    for(i=0;i<25;i+=4)
    {
      hinweis = "Bitte rechts einen Wert für "; 
      if(document.shop.elements[i].options[0].selected == true && document.shop.elements[i].length > 1) 
      {
        if (i==0) 
         hinweis += "die Sphäre";
        if (i==4) 
         hinweis += "den Cylinder";
        if (i==8) 
         hinweis += "die Achse";
        if (i==12) 
         hinweis += "den Radius";
        if (i==16) 
         hinweis += "den Durchmesser";
        if (i==20) 
         hinweis += "die Farbe";
        if (i==24) 
         hinweis += "den Inhalt";

        hinweis += " eingeben";
        alert(hinweis);
        document.shop.elements[i].focus();
        i=25;
        return false;
      }
    }
  }
  else
  {
    if ((document.shop.elements[].options[0].selected == false && document.shop.elements[32].options[0].selected == false && document.shop.elements[36].options[0].selected == false && document.shop.elements[40].options[0].selected == false && document.shop.elements[44].options[0].selected == false && document.shop.elements[48].options[0].selected == false && document.shop.elements[52].options[0].selected == false) ||
        (document.shop.elements[].options[0].selected == true && document.shop.elements[32].options[0].selected == true && document.shop.elements[36].options[0].selected == true && document.shop.elements[40].options[0].selected == true && document.shop.elements[44].options[0].selected == true && document.shop.elements[48].options[0].selected == true && document.shop.elements[52].options[0].selected == true))
    {i=0;}
    else
    {
      for(j=;j<53;j+=4)
      {
        hinweis = "Bitte links einen Wert für "; 
        if(document.shop.elements[j].options[0].selected == true)
        {
          if(j==)
           hinweis+="die Sphäre";
          if(j==32)
           hinweis+="den Cylinder";
          if(j==36)
           hinweis+="die Achse";
          if(j==40)
           hinweis+="den Radius";
          if(j==44)
           hinweis+="den Durchmesser";
          if(j==48)
           hinweis+="die Farbe";
          if(j==52)
           hinweis+="den Inhalt ";
          hinweis+=" eingeben";
          alert(hinweis);
          document.shop.elements[j].focus();
          j=53;
          return false;
        }
      }
    }
  }
}