function addRow(id)
{
len = document.form.cena.length ; 
i = 0 ; 
element = "" ; 

for (i = 0; i < len; i++) 
{
	if (document.form.cena[i].selected)
		{
		element = document.form.cena[i].value ; 
		var part = element.split("-");
		} 
}
    var service = part[1] ; 
	if (service==undefined)
	{
	service="" ; 
	}
	var sum = document.form.suma.value ;  
    var tbody = document.getElementById
    (id).getElementsByTagName("TBODY")[0];
    var row = document.createElement("TR")
    var td1 = document.createElement("TD")
    td1.appendChild(document.createTextNode(""+service+""))
    var td2 = document.createElement("TD")
    td2.appendChild (document.createTextNode(""+sum+" лв."))
    row.appendChild(td1);
    row.appendChild(td2);
    tbody.appendChild(row);
	
}


function calc() 
{
len = document.form.cena.length ; 
i = 0 ; 
element = "" ; 

for (i = 0; i < len; i++) 
{
	if (document.form.cena[i].selected)
		{
		element = document.form.cena[i].value ; 
		var part = element.split("-");
		} 
}

document.form.pokajicena.value=part[0];
document.form.suma.value=part[0]*document.form.kvadratura.value ; 
addRow('falling') ; 
}