function count()
{
var sq_val=document.calc.sq.value.replace(",", ".")*document.calc.mat.value;
var perim_val=document.calc.perim.value.replace(",", ".")*document.calc.perim_k.value;
var lustr_val=document.calc.lustr.value.replace(",", ".")*document.calc.lustry_k.value;
var svet_val=document.calc.svet.value.replace(",", ".")*document.calc.svet_k.value;
var trub_val=document.calc.trub.value.replace(",", ".")*document.calc.trub_k.value;
var kriv_val=document.calc.kriv.value.replace(",", ".")*document.calc.kriv_k.value;
var ugol_val=document.calc.ugol.value.replace(",", ".")*document.calc.ugol_k.value;
var all_elements=sq_val+perim_val+lustr_val+svet_val+trub_val+ kriv_val+ugol_val;
if (document.getElementById("center").checked)
{
all_elements=all_elements*document.calc.center_k.value.replace(",", ".");
}
if (document.getElementById("combi").checked)
{
all_elements=all_elements*document.calc.combi_k.value.replace(",", ".");
}

document.calc.itog.value=all_elements;
};

function change_pic()
{
//alert(document.calc.mat.selectedIndex);
document.getElementById("pic").src=pics[document.calc.mat.selectedIndex+1];

}