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<head><title>中国站长天空-网页特效-表单特效-点击左侧选项选入右侧选择框</title><meta http-equiv="content-Type" content="text/html;charset=gb2312"></head><body><!--把下面代码加到<body>与</body>之间--><SCRIPT LANGUAGE="JavaScript"><!-- Beginfunction moveOver() { var boxLength = document.choiceForm.choiceBox.length;var selectedItem = document.choiceForm.available.selectedIndex;var selectedText = document.choiceForm.available.options[selectedItem].text;var selectedValue = document.choiceForm.available.options[selectedItem].value;var i;var isNew = true;if (boxLength != 0) { for (i = 0; i < boxLength; i++) { thisitem = document.choiceForm.choiceBox.options[i].text;if (thisitem == selectedText) { isNew = false;break;}}} if (isNew) { newoption = new Option(selectedText, selectedValue, false, false);document.choiceForm.choiceBox.options[boxLength] = newoption;}document.choiceForm.available.selectedIndex=-1;}function removeMe() { var boxLength = document.choiceForm.choiceBox.length;arrSelected = new Array();var count = 0;for (i = 0; i < boxLength; i++) { if (document.choiceForm.choiceBox.options[i].selected) { arrSelected[count] = document.choiceForm.choiceBox.options[i].value;}count++;}var x;for (i = 0; i < boxLength; i++) { for (x = 0; x < arrSelected.length; x++) { if (document.choiceForm.choiceBox.options[i].value == arrSelected[x]) { document.choiceForm.choiceBox.options[i] = null;}}boxLength = document.choiceForm.choiceBox.length;}}function saveMe() { var strValues = "";var boxLength = document.choiceForm.choiceBox.length;var count = 0;if (boxLength != 0) { for (i = 0; i < boxLength; i++) { if (count == 0) { strValues = document.choiceForm.choiceBox.options[i].value;}else { strValues = strValues + "," + document.choiceForm.choiceBox.options[i].value;}count++;}}if (strValues.length == 0) { alert("您没有选择任何内容");}else { alert("您选择的内容如下:/r/n"+"第" + strValues+"条");}}// End --></script><form name="choiceForm"><table border=0><tr><td valign="top" width=175> <div align="center">可选内容:<br><select name="available" size=10 οnchange="moveOver();"><option value="1">内容一</option><option value="2">内容二</option><option value="3">内容三</option><option value="4">内容四</option><option value="5">内容五</option><option value="6">内容六</option><option value="7">内容七</option><option value="8">内容八</option><option value="9">内容九</option><option value="10">内容十</option></select></div></td><td valign="top"> <div align="center">你的选择:<br><select multiple name="choiceBox" style="width:150;" size="10"></select></div></td></tr><tr><td colspan=2 height=10> <div align="center"><input type="button" value="删除" οnclick="removeMe();"><input type="button" value="结果" οnclick="saveMe();"></div></td></tr></table></form></body></html>转载地址：http://xeoci.baihongyu.com/