function checkAddForm()
{

var a = document.vote.mp;
var b = document.vote.secsoft;

var flaga = false;
var flagb = false;
var flagc = false;
	

	
for(i=0;i<a.length;i++){ 
	if(a[i].checked == true){ 
		flaga = true;
	}
}

for(j=0;j<b.length;j++){ 
	if(b[j].checked == true){ 
		flagb = true;
	}
}


var obj=document.getElementById('other');
for(var n=0;n<obj.length;n++) 
{ 
	  if(obj[n].type== "checkbox ") 
	  { 
        if(obj[n].checked == true) 
        { 
           flagc = true;
        } 
	  } 
}
//if (flaga==false || flagb==false || flagc==false)
if (flaga==false || flagb==false)
{
  alert("对不起，问卷调查都必须填写，不可以为空!");
  return false;
}

return true;
}