// JavaScript Document  
<!--     
  function Checker1(form1)   
  {   
  //forma=form1;
  form1.items.value = "";   
  if (!form1.item.length)   //   只有一个复选框，form1.item.length   =   undefined     
  {
  if(form1.items.checked)     
  form1.items.value = form1.item.value;     
  }     
  else     
  {     
  for(i = 0;i < form1.item.length;i++)     
  {     
  if(form1.item(i).checked)   //   复选框中有选中的框     
  {     
  form1.items.value = form1.item(i).value;     
  for(j = i + 1;j<form1.item.length;j++)     
  {     
  if(form1.item(j).checked)     
  {     
  form1.items.value += ",";   //用空格做分割符     
  form1.items.value += form1.item(j).value;     
  }     
  }     
  break;     
  }     
  }     
  }     
  return true;     
  } 
  
  function Checker2(form2)   
  {   
  //forma=form2;
  form2.items.value = "";   
  if (!form2.item.length)   //   只有一个复选框，form2.item.length   =   undefined     
  {
  if(form2.items.checked)     
  form2.items.value = form2.item.value;     
  }     
  else     
  {     
  for(i = 0;i < form2.item.length;i++)     
  {     
  if(form2.item(i).checked)   //   复选框中有选中的框     
  {     
  form2.items.value = form2.item(i).value;     
  for(j = i + 1;j<form2.item.length;j++)     
  {     
  if(form2.item(j).checked)     
  {     
  form2.items.value += ",";   //用空格做分割符     
  form2.items.value += form2.item(j).value;     
  }     
  }     
  break;     
  }     
  }     
  }     
  return true;     
  } 
  
  function Checker3(form3)   
  {   
  //forma=form3;
  form3.items.value = "";   
  if (!form3.item.length)   //   只有一个复选框，form3.item.length   =   undefined     
  {
  if(form3.items.checked)     
  form3.items.value = form3.item.value;     
  }     
  else     
  {     
  for(i = 0;i < form3.item.length;i++)     
  {     
  if(form3.item(i).checked)   //   复选框中有选中的框     
  {     
  form3.items.value = form3.item(i).value;     
  for(j = i + 1;j<form3.item.length;j++)     
  {     
  if(form3.item(j).checked)     
  {     
  form3.items.value += ",";   //用空格做分割符     
  form3.items.value += form3.item(j).value;     
  }     
  }     
  break;     
  }     
  }     
  }     
  return true;     
  } 
  
  -->