form=document.request_form;
function builds_add()
{
	var tbody=document.getElementById('id_builds_additional');
	var row=document.createElement('TR');
	var cell_title=document.createElement('TD');
	var cell_delimeter_1=document.createElement('TD');
	var cell_square=document.createElement('TD');
	var cell_delimeter_2=document.createElement('TD');
	var cell_cost=document.createElement('TD');
	row.appendChild(cell_title);
	row.appendChild(cell_delimeter_1);
	row.appendChild(cell_square);
	row.appendChild(cell_delimeter_2);
	row.appendChild(cell_cost);
	cell_title.className='constrName';
	cell_square.className='constSpace';
	cell_cost.className='constrAmmount';
	cell_delimeter_1.className='brace';
	cell_delimeter_2.className='brace';
	/*Создаем инпут названия постройки*/
	var inp=document.createElement('INPUT');
	inp.type='text';
	inp.name='b_add_title['+tbody.rows.length+']';
	inp.onkeypress=builds_try_add;
	cell_title.appendChild(inp);
	var inp=document.createElement('INPUT');
	inp.type='text';
	inp.name='b_add_square['+tbody.rows.length+']';
	inp.onkeypress=builds_try_add;
	inp.onblur=function ()
	{
		this.value=this.value.replace(/\,/g,'.');
		this.value=this.value.replace(/[^0-9\.]+/g,'');
	}
	cell_square.appendChild(inp);
	var inp=document.createElement('INPUT');
	inp.type='text';
	inp.name='b_add_cost['+tbody.rows.length+']';
	inp.onkeypress=builds_try_add;
	cell_cost.appendChild(inp);
	
	tbody.appendChild(row);
}
function builds_try_add()
{
	var tbody=document.getElementById('id_builds_additional');
	var reg=/\[(\d+)\]/;
	var text=reg.exec(this.name);
	if (text[1]*1==tbody.rows.length-1)
		builds_add();
}
builds_add();
function show_cost(obj,idx)
{
	if (obj.checked)
	{
		document.getElementById('obj'+idx+'_block').style.display='';
		document.getElementById('labelBlock').style.display='';
	}else
	{
		document.getElementById('obj'+idx+'_block').style.display='none';
		if (!form.what_1.checked && !form.what_2.checked && !form.what_3.checked && !form.what_5.checked)
			document.getElementById('labelBlock').style.display='none';
	}
}