//calling the values
var ret = ShowDialogopen(pageUrl,width,height);

function ShowDialogopen(PageName,strWidth,strHeight) {
    var Dialogoptions = "Center=Yes; Scrollbar=No; dialogWidth=" + strWidth + ";          dialogTop=150px; dialogHeight=" + strHeight + "; Help=No; Status=No; Resizable=Yes;";
    var OpenUrl = PageName; 
    var ret = window.showModalDialog(OpenUrl,"Yes",Dialogoptions);
		    
    return ret;
}

//Dialog returning values
function ReturnValues() {
    var lstBox = document.getElementById("lst_Name");
    var texts = "";
    var values = "";
    for (i=0; i<lstBox.options.length; i++) {
        texts = texts + lstBox.options[i].text + "!";
        values = values + lstBox.options[i].value + "!";
    }

    window.returnValue = texts + "$" + values;
    Close();
    return false;
}

该代码在通过主页使用时工作得很好,但是当我使用Modal对话框页面时,returnValue将丢失.