function enviar(){

if(chk(miform.emp,'EXPEDIDOR')&&
chk(miform.cuit,'CUIT')&&
chk(miform.dir1,'DIRECCION')&&
chk(miform.mail,'MAIL')&&
chk(miform.ref,'REFERENCIA')&&
chk(miform.obtuvo,'OBTUVO'))

{
  miform.body.value = document.body.innerHTML
  miform.method = "post"
  miform.action = "http://200.81.215.89/iccesweb/licitacion1.asp"

miform.submit() 
}
}


function chk(form,valor)
{
var p = form
var m = "El campo " + valor + " no puede estar vacio" 

	if(p.value == "")
		{
			alert(m.toUpperCase())
			p.focus()
			return false
		}
return true
}