3つのリストの値を選択して他のselect 1に追加し、select 1の内容をバックグラウンドに提出します.

<select id="hereFirstClass" name="hereFirstClass" style="width:130"
									size="8" onchange="testName(1,this);">
									
										<option value="2">  、  </option>
									
										<option value="3">  </option>
									
										<option value="4">  、  </option>
									
										<option value="5">    </option>
									
										<option value="6">    </option>
									
										<option value="7">  、  </option>
									
										<option value="8">  </option>
									
										<option value="9">    </option>
									
										<option value="10">  </option>
									
										<option value="11">  </option>
									
										<option value="12">    </option>
									
										<option value="13">  、  </option>
									
										<option value="14">       </option>
									
										<option value="15">    </option>
									
										<option value="16">  、  </option>
									
										<option value="17">  、   、  </option>
									
										<option value="18">  、  </option>
									
										<option value="21">  、  </option>
									
										<option value="23">  </option>
									
										<option value="30">  、  </option>
									
										<option value="32">    </option>
									
										<option value="33">     </option>
									
										<option value="34">  </option>
									
										<option value="52">  </option>
									
										<option value="53">  、  </option>
									
										<option value="54">  </option>
									
										<option value="55">  </option>
									
										<option value="56">     </option>
									
										<option value="57">     </option>
									
										<option value="58">    </option>
									
										<option value="59">  、  </option>
									
										<option value="509">    </option>
									
										<option value="1813">  </option>
									
										<option value="2829">      </option>
									
										<option value="10208">    </option>
									
									
								</select>

								<select id="hereSecondClass" name="hereSecondClass" style="width:130"
									size="8" onchange="testName(2,this);">
								</select>

								<select id="hereThirdClass" name="hereSecondClass" style="width:130"
									size="8" onchange="testName(3,this);">
								</select>
								<div class="add_Delete"><input type="button" value="↓  " onclick="addline()"/>
      <input type="button" value="x   " onclick="delline()"/></div>
      <script type="text/javascript" >
      	function addline() {
      		var num = document.getElementById("select1");
      		if(num.length>5) {
      			alert("      6 ");
      			return false;
      		}
      		var obj;
      		obj = document.createElement("option");
      		
      		var obj1 = document.getElementById("hereFirstClass");
      		var obj2 = document.getElementById("hereSecondClass");
      		var obj3 = document.getElementById("hereThirdClass");
      		if(document.getElementById("hereFirstClass").value=="") {
      			alert("       ");
      			return false;
      		}
      		var hereFirstValue = document.getElementById("hereFirstClass").value;
			var hereFirstName = document.getElementById("hereFirstClass").options[obj1.selectedIndex].text;
      		
      		if(document.getElementById("hereSecondClass").value=="") {
      			obj.value = hereFirstValue;
      			obj.text = hereFirstName;
      			document.getElementById("select1").add(obj);
      		}else if(document.getElementById("hereThirdClass").value=="") {
      			var hereSecondValue = document.getElementById("hereSecondClass").value;
      			var hereSecondName = document.getElementById("hereSecondClass").options[obj2.selectedIndex].text;
      			obj.value = hereFirstValue+"//"+hereSecondValue;
      			obj.text = hereFirstName+"//"+hereSecondName;
      			document.getElementById("select1").add(obj);
      		}else{
      			var hereThirdValue = document.getElementById("hereThirdClass").value;
      			var hereThirdName = document.getElementById("hereThirdClass").options[obj3.selectedIndex].text;
      			var hereSecondValue = document.getElementById("hereSecondClass").value;
      			var hereSecondName = document.getElementById("hereSecondClass").options[obj2.selectedIndex].text;
      			obj.value = hereFirstValue+"//"+hereSecondValue+"//"+hereThirdValue;
      			obj.text = hereFirstName+"//"+hereSecondName+"//"+hereThirdName;
      			document.getElementById("select1").add(obj);
      		}
      		
      	}
      	
      	function delline() {
      		document.all.select1.options.remove(document.all.select1.selectedIndex);
      		document.all.select1.selectIndex=0;
      	}
      
      </script>
      
    <table width="460" name="table3" id="table3" >
   		<select size="8" name="select1" id="select1" multiple="true">
   		</select>
    </table>

//------------------------    javascript
<script type="text/javascript">
	function refer() {
		var op = document.getElementById("select1").getElementsByTagName("option");
		if(op.length<0) {
			alert("       ");
			return false;
		}else {
			for(var i=0; i<op.length; i++) {
				var str = "input"+i; 
				document.getElementById(str).value = op[i].childNodes[0].nodeValue;
			}
		}
		document.form1.action="/HereB2B/corporate?method=insertCorporate";
		document.form1.submit();
	}
</script>