function course_options(items)

{

//anchor(items);

document.mosForm.cors_id.value=items;

showdates(items);

if(items==0){

 document.getElementById("options").style.visibility = 'visible';

  document.getElementById("opns1").style.visibility = 'visible';

  document.getElementById("opns2").style.visibility = 'hidden';

  document.getElementById("opns3").style.visibility = 'hidden';

  document.getElementById("opns4").style.visibility = 'hidden';

  document.getElementById("opns5").style.visibility = 'hidden';

  document.mosForm.paper1[0].disabled = false;

  document.mosForm.paper1[1].disabled = false;

  //document.mosForm.paper1[2].disabled = false;

  document.mosForm.paper1[0].checked = false;

  document.mosForm.paper1[1].checked = false;

  //document.mosForm.paper1[2].checked = false;

  document.mosForm.paper2[0].checked= false;

   document.mosForm.paper2[1].checked= false;

   //document.mosForm.paper2[2].checked= false;

   document.mosForm.paper3[0].checked= false;

   document.mosForm.paper3[1].checked= false;

   //document.mosForm.paper3[2].checked= false;

   document.mosForm.papers1_2.checked= false;

   /*document.mosForm.papers1_2[0].checked= false;

   document.mosForm.papers1_2[1].checked= false;*/

   //document.mosForm.papers1_2[2].checked= false;

    document.mosForm.diets[0].checked= false;

   document.mosForm.diets[1].checked= false;

   document.mosForm.addnl_info.value="";

  }

  else if(items==1){

  document.getElementById("options").style.visibility = 'visible';

   document.getElementById("opns1").style.visibility = 'hidden';

   document.getElementById("opns2").style.visibility = 'visible';

   document.getElementById("opns3").style.visibility = 'hidden';

   document.getElementById("opns4").style.visibility = 'hidden';

   document.getElementById("opns5").style.visibility = 'hidden';

   document.mosForm.paper1[0].disabled = false;

  document.mosForm.paper1[1].disabled = false;

  //document.mosForm.paper1[2].disabled = false;

  document.mosForm.paper1[0].checked = false;

  document.mosForm.paper1[1].checked = false;

  //document.mosForm.paper1[2].checked = false;

  document.mosForm.paper2[0].checked= false;

   document.mosForm.paper2[1].checked= false;

   //document.mosForm.paper2[2].checked= false;

   document.mosForm.paper3[0].checked= false;

   document.mosForm.paper3[1].checked= false;

   //document.mosForm.paper3[2].checked= false;

   document.mosForm.papers1_2.checked= false;

   /*document.mosForm.papers1_2[0].checked= false;

   document.mosForm.papers1_2[1].checked= false;*/

   //document.mosForm.papers1_2[2].checked= false;

    document.mosForm.diets[0].checked= false;

   document.mosForm.diets[1].checked= false;

   document.mosForm.addnl_info.value="";

}

  else if(items==2){

  document.getElementById("options").style.visibility = 'visible';

   document.getElementById("opns1").style.visibility = 'hidden';

   document.getElementById("opns2").style.visibility = 'hidden';

   document.getElementById("opns3").style.visibility = 'visible';

   document.getElementById("opns4").style.visibility = 'hidden';

   document.getElementById("opns5").style.visibility = 'hidden';

   document.mosForm.paper1[0].disabled = false;

  document.mosForm.paper1[1].disabled = false;

  //document.mosForm.paper1[2].disabled = false;

  document.mosForm.paper1[0].checked = false;

  document.mosForm.paper1[1].checked = false;

  //document.mosForm.paper1[2].checked = false;

  document.mosForm.paper2[0].checked= false;

   document.mosForm.paper2[1].checked= false;

   //document.mosForm.paper2[2].checked= false;

   document.mosForm.paper3[0].checked= false;

   document.mosForm.paper3[1].checked= false;

   //document.mosForm.paper3[2].checked= false;

  document.mosForm.papers1_2.checked= false;

   /*document.mosForm.papers1_2[0].checked= false;

   document.mosForm.papers1_2[1].checked= false;*/

   //document.mosForm.papers1_2[2].checked= false;

    document.mosForm.diets[0].checked= false;

   document.mosForm.diets[1].checked= false;

   document.mosForm.addnl_info.value="";

  }

  else if((items==3) || (items==4)){

	if(items==3){ document.mosForm.amount.value='595'; }

	else if(items==4) { document.mosForm.amount.value='150'; }

  document.getElementById("options").style.visibility = 'visible';

   document.getElementById("opns1").style.visibility = 'hidden';

   document.getElementById("opns2").style.visibility = 'hidden';

   document.getElementById("opns3").style.visibility = 'hidden';

   document.getElementById("opns4").style.visibility = 'hidden';

   document.getElementById("opns5").style.visibility = 'visible';

   document.mosForm.paper1[0].disabled = false;

  document.mosForm.paper1[1].disabled = false;

  //document.mosForm.paper1[2].disabled = false;

  document.mosForm.paper1[0].checked = false;

  document.mosForm.paper1[1].checked = false;

  //document.mosForm.paper1[2].checked = false;

  document.mosForm.paper2[0].checked= false;

   document.mosForm.paper2[1].checked= false;

   //document.mosForm.paper2[2].checked= false;

   document.mosForm.paper3[0].checked= false;

   document.mosForm.paper3[1].checked= false;

   //document.mosForm.paper3[2].checked= false;

  document.mosForm.papers1_2.checked= false;

   /*document.mosForm.papers1_2[0].checked= false;

   document.mosForm.papers1_2[1].checked= false;*/

   //document.mosForm.papers1_2[2].checked= false;

   document.mosForm.addnl_info.value="";

  }

  else if(items==5){

  document.getElementById("options").style.visibility = 'visible';

  document.getElementById("opns1").style.visibility = 'hidden';

  document.getElementById("opns2").style.visibility = 'hidden';

  document.getElementById("opns3").style.visibility = 'hidden';

  document.getElementById("opns4").style.visibility = 'visible';

  document.getElementById("opns5").style.visibility = 'hidden';

  document.mosForm.paper1[0].disabled = false;

  document.mosForm.paper1[1].disabled = false;

  //document.mosForm.paper1[2].disabled = false;

  document.mosForm.paper1[0].checked = false;

  document.mosForm.paper1[1].checked = false;

  //document.mosForm.paper1[2].checked = false;

  document.mosForm.paper2[0].checked= false;

   document.mosForm.paper2[1].checked= false;

   //document.mosForm.paper2[2].checked= false;

   document.mosForm.paper3[0].checked= false;

   document.mosForm.paper3[1].checked= false;

   //document.mosForm.paper3[2].checked= false;

   document.mosForm.papers1_2.checked= false;

   /*document.mosForm.papers1_2[0].checked= false;

   document.mosForm.papers1_2[1].checked= false;*/

   //document.mosForm.papers1_2[2].checked= false;

   document.mosForm.diets[0].checked= false;

   document.mosForm.diets[1].checked= false;

   //document.mosForm.papers1_2[2].checked= false;

   document.mosForm.addnl_info.value="";

   }

}