function calcular()
		{
			var refri = document.form.cantRefri.value * 1700;
			var refriAltaEfic = document.form.cantRefriAltaEfic.value * 350;
			var tele = document.form.cantTele.value * document.form.horaTele.value * document.form.consTele.value;
			var telePlasma = document.form.cantTelePlasma.value * document.form.horaTelePlasma.value * document.form.consTelePlasma.value;
			var dvd = document.form.cantDvd.value * document.form.horaDvd.value * document.form.consDvd.value;
			var sky = document.form.cantSky.value * document.form.horaSky.value * document.form.consSky.value;
			var estereo = document.form.cantEstereo.value * document.form.horaEstereo.value * document.form.consEstereo.value;
			var compu = document.form.cantCompu.value * document.form.horaCompu.value * document.form.consCompu.value;
			var ventiMesa = document.form.cantVentiMesa.value * document.form.horaVentiMesa.value * document.form.consVentiMesa.value;
			var ventiTecho = document.form.cantVentiTecho.value * document.form.horaVentiTecho.value * document.form.consVentiTecho.value;
			var licua = document.form.cantLicuadora.value * document.form.horaLicuadora.value * document.form.consLicuadora.value;
			var focInt = document.form.cantFocosInt.value * document.form.horaFocosInt.value * document.form.consFocosInt.value;
			var focExt = document.form.cantFocosExt.value * document.form.horaFocosExt.value * document.form.consFocosExt.value;
			var lava = document.form.cantLavadora.value * document.form.horaLavadora.value * document.form.consLavadora.value;
			var plancha = document.form.cantPlancha.value * document.form.horaPlancha.value * document.form.consPlancha.value;
			var secadora = document.form.cantSecadora.value * document.form.horaSecadora.value * document.form.consSecadora.value;
			var micro = document.form.cantMicroondas.value * document.form.horaMicroondas.value * document.form.consMicroondas.value;
			var tostadora = document.form.cantTostadora.value * document.form.horaTostadora.value * document.form.consTostadora.value;
			var bomba = document.form.cantBomba.value * document.form.horaBomba.value * document.form.consBomba.value;
			var apar1 = document.form.cantApar1.value * document.form.horaApar1.value * document.form.consApar1.value;
			var apar2 = document.form.cantApar2.value * document.form.horaApar2.value * document.form.consApar2.value;
			
			document.form.result.value = refri
										+refriAltaEfic
										+tele
										+telePlasma
										+dvd
										+sky
										+estereo
										+compu
										+ventiMesa
										+ventiTecho
										+licua
										+focInt
										+focExt
										+lava
										+plancha
										+secadora
										+micro
										+tostadora
										+bomba
										+apar1
										+apar2;
		}
		
		function vermas()
		{
			document.form.apar1.style.display = '';
			document.form.cantApar1.style.display = '';
			document.form.horaApar1.style.display = '';
			document.form.consApar1.style.display = '';
			document.form.apar2.style.display = '';
			document.form.cantApar2.style.display = '';
			document.form.horaApar2.style.display = '';
			document.form.consApar2.style.display = '';
			document.getElementById('linkmas').style.display = 'none';
		}
		function init()
		{
			document.form.apar1.style.display = 'none';
			document.form.cantApar1.style.display = 'none';
			document.form.horaApar1.style.display = 'none';
			document.form.consApar1.style.display = 'none';
			document.form.apar2.style.display = 'none';
			document.form.cantApar2.style.display = 'none';
			document.form.horaApar2.style.display = 'none';
			document.form.consApar2.style.display = 'none';
		}
		
		function reinit()
		{
			document.form.cantTele.disabled = false;
			document.form.horaTele.disabled = false;
			document.form.consTele.disabled = false;
			document.form.cantTelePlasma.disabled = false;
			document.form.horaTelePlasma.disabled = false;
			document.form.consTelePlasma.disabled = false;
			document.form.cantDvd.disabled = false;
			document.form.horaDvd.disabled = false;
			document.form.consDvd.disabled = false;
			document.form.cantSky.disabled = false;
			document.form.horaSky.disabled = false;
			document.form.consSky.disabled = false;
			document.form.cantRefri.disabled = false;
			document.form.cantRefriAltaEfic.disabled = false;
			document.form.cantEstereo.disabled = false;
			document.form.horaEstereo.disabled = false;
			document.form.consEstereo.disabled = false;
			document.form.cantCompu.disabled = false;
			document.form.horaCompu.disabled = false;
			document.form.consCompu.disabled = false;
			document.form.cantVentiMesa.disabled = false;
			document.form.horaVentiMesa.disabled = false;
			document.form.consVentiMesa.disabled = false;
			document.form.cantVentiTecho.disabled = false;
			document.form.horaVentiTecho.disabled = false;
			document.form.consVentiTecho.disabled = false;
			document.form.cantLicuadora.disabled = false;
			document.form.horaLicuadora.disabled = false;
			document.form.consLicuadora.disabled = false;
			document.form.cantFocosInt.disabled = false;
			document.form.horaFocosInt.disabled = false;
			document.form.consFocosInt.disabled = false;
			document.form.cantFocosExt.disabled = false;
			document.form.horaFocosExt.disabled = false;
			document.form.consFocosExt.disabled = false;
			document.form.cantLavadora.disabled = false;
			document.form.horaLavadora.disabled = false;
			document.form.consLavadora.disabled = false;
			document.form.cantPlancha.disabled = false;
			document.form.horaPlancha.disabled = false;
			document.form.consPlancha.disabled = false;
			document.form.cantSecadora.disabled = false;
			document.form.horaSecadora.disabled = false;
			document.form.consSecadora.disabled = false;
			document.form.cantMicroondas.disabled = false;
			document.form.horaMicroondas.disabled = false;
			document.form.consMicroondas.disabled = false;
			document.form.cantTostadora.disabled = false;
			document.form.horaTostadora.disabled = false;
			document.form.consTostadora.disabled = false;
			document.form.cantBomba.disabled = false;
			document.form.horaBomba.disabled = false;
			document.form.consBomba.disabled = false;
			document.form.apar1.disabled = false;
			document.form.apar2.disabled = false;
			document.form.cantApar1.disabled = false;
			document.form.horaApar1.disabled = false;
			document.form.consApar1.disabled = false;
			document.form.cantApar2.disabled = false;
			document.form.horaApar2.disabled = false;
			document.form.consApar2.disabled = false;
			document.form.comentarios.disabled = false;
		}
		
		function validate_form(thisform)
		{
		
		with (thisform)
		  {
		  //validar campo e-mail
		  if (document.form.mail.value==null || document.form.mail.value=="")
			{
				alert('Favor de proporcionar por lo menos una direccion e-mail valida.');
				mail.focus();
				return false;
			}
			
			//llenar el correo unicamente con los campos rellenos
			if (document.form.cantTele.value == "") 
			{
				document.form.cantTele.disabled = true;
				document.form.horaTele.disabled = true;
				document.form.consTele.disabled = true;
			}
			if (document.form.cantTelePlasma.value == "") 
			{
				document.form.cantTelePlasma.disabled = true;
				document.form.horaTelePlasma.disabled = true;
				document.form.consTelePlasma.disabled = true;
			}
			if (document.form.cantDvd.value == "") 
			{
				document.form.cantDvd.disabled = true;
				document.form.horaDvd.disabled = true;
				document.form.consDvd.disabled = true;
			}
			if (document.form.cantSky.value == "") 
			{
				document.form.cantSky.disabled = true;
				document.form.horaSky.disabled = true;
				document.form.consSky.disabled = true;
			}
			if (document.form.cantRefri.value == "") 
			{
				document.form.cantRefri.disabled = true;
			}
			if (document.form.cantRefriAltaEfic.value == "") 
			{
				document.form.cantRefriAltaEfic.disabled = true;
			}
			if (document.form.cantEstereo.value == "") 
			{
				document.form.cantEstereo.disabled = true;
				document.form.horaEstereo.disabled = true;
				document.form.consEstereo.disabled = true;
			}
			if (document.form.cantCompu.value == "") 
			{
				document.form.cantCompu.disabled = true;
				document.form.horaCompu.disabled = true;
				document.form.consCompu.disabled = true;
			}
			if (document.form.cantVentiMesa.value == "") 
			{
				document.form.cantVentiMesa.disabled = true;
				document.form.horaVentiMesa.disabled = true;
				document.form.consVentiMesa.disabled = true;
			}
			if (document.form.cantVentiTecho.value == "") 
			{
				document.form.cantVentiTecho.disabled = true;
				document.form.horaVentiTecho.disabled = true;
				document.form.consVentiTecho.disabled = true;
			}
			if (document.form.cantLicuadora.value == "") 
			{
				document.form.cantLicuadora.disabled = true;
				document.form.horaLicuadora.disabled = true;
				document.form.consLicuadora.disabled = true;
			}
			if (document.form.cantFocosInt.value == "") 
			{
				document.form.cantFocosInt.disabled = true;
				document.form.horaFocosInt.disabled = true;
				document.form.consFocosInt.disabled = true;
			}
			if (document.form.cantFocosExt.value == "") 
			{
				document.form.cantFocosExt.disabled = true;
				document.form.horaFocosExt.disabled = true;
				document.form.consFocosExt.disabled = true;
			}
			if (document.form.cantLavadora.value == "") 
			{
				document.form.cantLavadora.disabled = true;
				document.form.horaLavadora.disabled = true;
				document.form.consLavadora.disabled = true;
			}
			if (document.form.cantPlancha.value == "") 
			{
				document.form.cantPlancha.disabled = true;
				document.form.horaPlancha.disabled = true;
				document.form.consPlancha.disabled = true;
			}
			if (document.form.cantSecadora.value == "") 
			{
				document.form.cantSecadora.disabled = true;
				document.form.horaSecadora.disabled = true;
				document.form.consSecadora.disabled = true;
			}
			if (document.form.cantMicroondas.value == "") 
			{
				document.form.cantMicroondas.disabled = true;
				document.form.horaMicroondas.disabled = true;
				document.form.consMicroondas.disabled = true;
			}
			if (document.form.cantTostadora.value == "") 
			{
				document.form.cantTostadora.disabled = true;
				document.form.horaTostadora.disabled = true;
				document.form.consTostadora.disabled = true;
			}
			if (document.form.cantBomba.value == "") 
			{
				document.form.cantBomba.disabled = true;
				document.form.horaBomba.disabled = true;
				document.form.consBomba.disabled = true;
			}
			if (document.form.apar1.value == "") 
			{
				document.form.apar1.disabled = true;
			}
			if (document.form.apar2.value == "") 
			{
				document.form.apar2.disabled = true;
			}
			if (document.form.cantApar1.value == "") 
			{
				document.form.cantApar1.disabled = true;
				document.form.horaApar1.disabled = true;
				document.form.consApar1.disabled = true;
			}
			if (document.form.cantApar2.value == "") 
			{
				document.form.cantApar2.disabled = true;
				document.form.horaApar2.disabled = true;
				document.form.consApar2.disabled = true;
			}
			if (document.form.comentarios.value == "")
			{
				document.form.comentarios.disabled = true;
			}
		  }
		  
		  setTimeout ("reinit()",1000);
		  return true;
		}