jsダイナミック計算テーブルのある列の値の合計

/**
 * 
 * @tableId   id
 * @numId     id
 * @index   
 * @first     
 * @obj checkbox  
 */
function countNum(tableId, numId, index, first,obj) {
	var sumStr = document.getElementById(numId);
	//       
	if (null != obj) {
		var num = new Number(obj.parentElement.parentElement.cells[index].innerText);
		if (obj.checked) {
			sumStr.value = new Number(sumStr.value) + num;
		}
		else {
			sumStr.value = new Number(sumStr.value) - num;
		}
	}
	//        
	else {
		var table = document.getElementById(tableId);
		var sum = 0;
		var rows = table.rows;
		for (i = 1; i < rows.length; i++) {
                                                //        
			var checkObj = rows[i].cells[0].all[0];
			var flag = false;
			if (null != checkObj 
				&& typeof checkObj.type != 'undefined'
				&&  checkObj.type == 'checkbox') {
				flag = checkObj.checked;
			}
                                                //               
			if (first || flag) {
				var num = new Number(rows[i].cells[index].innerText);
				sum = sum + num;
			}
		}
		sumStr.value = sum;
	}
}

				
				
					
					
				
				
				
					
					
				
				
				
					
					
				
				
				
					
					
				
				
				
			
			
				

					
						
							
								
								
							
							
							
						
						
							
								
							
							
						
						
							
								
							
							
						
						
							
								
							
							
						
						
							
								
							
							
						
					
				
			

			
				
					countNum("AEDT_account:countNumT", "AEDT_account:number",4,true);
				
			

				
				
				
				
				
				
				
				
				
				
			
			
				

					
						
							
								
							
							
						
						
							
								
							
							
						
						
							
								
							
							
						
						
							
								
							
							
						
						
							
								
							
							
						
					
				
			

			
				
					countNum("DTRD_account:countNumT", "DTRD_account:number",3,true);