function razmer(num)
 { 
  if (num == 1) {
         document.getElementById('razm4').readOnly = false;
         document.getElementById('razm3').readOnly = true;
         document.getElementById('razm2').readOnly = true;
         document.getElementById('razm1').readOnly = true;
		 }
  else {
         document.getElementById('razm4').readOnly = true;
         document.getElementById('razm3').readOnly = false;
         document.getElementById('razm2').readOnly = false;
         document.getElementById('razm1').readOnly = false;
  }
  		 //document.getElementById('razm4').value = "";
         //document.getElementById('razm3').value = "";
         //document.getElementById('razm2').value = "";
         //document.getElementById('razm1').value = "";
 }
 
 function select1()
 {
 var s=document.podbor.selected1.selectedIndex;
 if (s == 1) {document.getElementById('div1').style.display = "none";document.getElementById('chek1').checked = false;document.getElementById('div2').style.display = "block";}
 if (s == 0) {document.getElementById('div2').style.display = "none";document.getElementById('chek2').checked = false;document.getElementById('div1').style.display = "block";}
 }
 
 function cler1()
 {
  var r;
  	
  if (document.getElementById('razm').checked==true) 
   {v = document.getElementById('razm4').value; v = v*1;}
  else
  {
    d =document.getElementById('razm1').value;
    s =document.getElementById('razm2').value;
    w =document.getElementById('razm3').value;
    v = d * s * w;
  }

if (v != 0)
{
  dop1 = document.getElementById('dop1').value*1.2;
  dop2 = document.getElementById('dop2').value*1.2;


  
  if (document.getElementById('dop3').checked) {z=1.5;}else{z=0;}
  if (document.getElementById('dop4').checked) {n=v/2;}else{n=0;}
  
  r = v + dop1 + dop2 + z + n;
}
 
	if(r) document.getElementById('rs').value = r;
 }