function chekras()
{
 if(document.forms.formras.height.value.length>0)
 {f=parseInt(document.forms.formras.height.value, 10);
if(f>0){ height=parseInt(document.forms.formras.height.value, 10); }
else
{ alert('Введите Ширину');
	document.forms.formras.height.focus();
	return false;
}
 }
 else
 {alert('Введите Ширину');
document.forms.formras.height.focus();
return false;
 }

 if(document.forms.formras.whight.value.length>0)
 {f=parseInt(document.forms.formras.whight.value, 10);
if(f>0){ whight=parseInt(document.forms.formras.whight.value, 10); }
else
{ alert('Введите Высоту');
	document.forms.formras.whight.focus();
	return false;
}
 }
 else
 {alert('Введите Высоту');
document.forms.formras.whight.focus();
return false;
 }
 
lcount=document.forms.formras.type.length;
 for(i=0;i<lcount;i++)
 {
 if(document.forms.formras.type[i].checked==true)
 {
 type=document.forms.formras.type[i].value;
 }
 }
 
 lcount=document.forms.formras.teplo.length;
 for(i=0;i<lcount;i++)
 {
 if(document.forms.formras.teplo[i].checked==true)
 {
 teplo=document.forms.formras.teplo[i].value;
 }
 }

if(document.forms.formras.ramka.checked==true) { 
 lcount=document.forms.formras.ramkaval.length;
 for(i=0;i<lcount;i++)
 {
 	if(document.forms.formras.ramkaval[i].checked==true)
 	{
 		ramkaval=document.forms.formras.ramkaval[i].value;
 	}
 }
}
else { ramkaval=0; }

 
  if(document.forms.formras.montaj.checked==true)
 { montaj=parseInt(document.forms.formras.montaj.value, 10); } else { montaj=0; }


if(document.forms.formras.korobka.checked==true) { 
 lcount=document.forms.formras.korobkaval.length;
 for(i=0;i<lcount;i++)
 {
 	if(document.forms.formras.korobkaval[i].checked==true)
 	{
 		korobkaval=parseInt(document.forms.formras.korobkaval[i].value, 10);
 	}
 }
}
else { korobkaval=0; }

  if(document.forms.formras.stvorki.checked==true)
 { stvorki=parseInt(document.forms.formras.stvorki.value, 10); } else { stvorki=0; }
 
   if(document.forms.formras.proyshinu.checked==true)
 { proyshinu=parseInt(document.forms.formras.proyshinu.value, 10); } else { proyshinu=0; }

if(document.forms.formras.ramkakv.checked==true) { 
 lcount=document.forms.formras.ramkakvval.length;
 for(i=0;i<lcount;i++)
 {
 	if(document.forms.formras.ramkakvval[i].checked==true)
 	{
 		ramkakvval=parseInt(document.forms.formras.ramkakvval[i].value, 10);
 	}
 }
}
else { ramkakvval=0; }

   if(document.forms.formras.dvepetli.checked==true)
 { dvepetli=parseInt(document.forms.formras.dvepetli.value, 10); } else { dvepetli=0; }
 

if(document.forms.formras.zasovu.checked==true) { 
	zasovuval=document.forms.formras.zasovuval.value;
}
else { zasovuval=0; }

if(document.forms.formras.usilenie.checked==true) { 
	usilenie=document.forms.formras.usilenie.value;
}
else { usilenie=0; }

if(document.forms.formras.petli.checked==true) { 
 lcount=document.forms.formras.petlival.length;
 for(i=0;i<lcount;i++)
 {
 	if(document.forms.formras.petlival[i].checked==true)
 	{
 		petlival=parseInt(document.forms.formras.petlival[i].value, 10);
 	}
 }
}
else { petlival=0; }

 if(document.forms.formras.ogryntovka.checked==true)
 { ogryntovka=parseInt(document.forms.formras.ogryntovka.value, 10); } else { ogryntovka=0; }

 
if(document.forms.formras.zadvijka.checked==true) { 
 lcount=document.forms.formras.zadvijkaval.length;
 for(i=0;i<lcount;i++)
 {
 	if(document.forms.formras.zadvijkaval[i].checked==true)
 	{
 		zadvijkaval=parseInt(document.forms.formras.zadvijkaval[i].value, 10);
 	}
 	if(document.forms.formras.zadvijka_q[i].checked==true)
 	{
 		zadvijka_q=parseInt(document.forms.formras.zadvijka_q[i].value, 10);
 	}
 }
}
else { zadvijkaval=0; zadvijka_q=0;}

 
total_sum=0;
pl=(height/1000)*(whight/1000);
perimetr = ((height/1000)+(whight/1000))*2;

if(document.forms.formras.obnalichka.checked==true) {
if (pl<=6) { obnalichkaval=400; }
else { obnalichkaval=500; } 
}
else { obnalichkaval=0; }
total_sum+=pl*type;
total_sum+=pl*teplo;
total_sum+=perimetr*ramkaval;
total_sum+=montaj;
total_sum+=perimetr*korobkaval;
total_sum+=perimetr*usilenie;
total_sum+=perimetr*stvorki;
total_sum+=proyshinu;
total_sum+=perimetr*ramkakvval;
total_sum+=dvepetli;
total_sum+=obnalichkaval;
total_sum+=zasovuval*150;
total_sum+=petlival*4;
total_sum+=perimetr*ogryntovka;
total_sum+=zadvijkaval*zadvijka_q;

document.forms.formras.result.value=total_sum;

}

function visible() {
if(document.forms.formras.ramka.checked==true)
{ document.getElementById('ramka').style.display='block'; } else {document.getElementById('ramka').style.display='none'; }
if(document.forms.formras.korobka.checked==true)
{ document.getElementById('korobka').style.display='block';  } else {document.getElementById('korobka').style.display='none'; }
if(document.forms.formras.ramkakv.checked==true)
{ document.getElementById('ramkakv').style.display='block';  } else {document.getElementById('ramkakv').style.display='none'; }
if(document.forms.formras.zasovu.checked==true)
{ document.getElementById('zasovu').style.display='block'; } else {document.getElementById('zasovu').style.display='none'; }
if(document.forms.formras.petli.checked==true)
{ document.getElementById('petli').style.display='block'; } else {document.getElementById('petli').style.display='none'; }
if(document.forms.formras.zadvijka.checked==true)
{ document.getElementById('zadvijka').style.display='block'; } else {document.getElementById('zadvijka').style.display='none'; }
}