/**
 * 
 * @param {HTMLTableElement} table
 * @param {Number} amount
 */
function limitUpload(table, amount) {
	for (var i = 1;i<table.rows.length;i++) {
		
		var row = table.rows[i];
		if (i<=amount) {
			row.style.display = '';
		}
		else {
			row.style.display = 'none';
		}
	}
}

/**
 * 
 * @param {Select} cmb
 * @param {HTMLTableElement} table
 */
function initAmountToUpload(cmb, table){

	
	
	cmb.onchange = function(){
		var amt = parseInt(cmb.value);
		amt *= 2; // include caption
		limitUpload(table, amt);
	}
	
	cmb.onchange();
}