function SubmitKeyClick(button)
{   
    if (event.keyCode == 13)
    {       
        event.keyCode=9;
        event.returnValue = false;
        document.all(button).click();
    }
}


function changeimg()
{
    document.all.pic.src = '/main/validator.aspx?CodeLen=4&Fineness=95&ImgWidth=65&PosX=0&PosY=-1&FontFamily=Arial&FontSize=14&&ampRndnum='+ Math.round(Math.random()*100);
    document.all.pic.style.align = 'absMiddle';
}



function showInfo(){
    var url = "../main/custPassword.htm";
    window.open(url,'','location=no,status=no,menubar=no,scrollbars=no,resizable=yes,width=347,height=196,left=300,top=284');
    return false;
}





 
// 1.判断select选项中 是否存在Value="paraValue"的Item        
function jsSelectIsExitItem(objSelect, objItemValue) {        
    var isExit = false;        
    for (var i = 0; i < objSelect.options.length; i++) {        
        if (objSelect.options[i].value == objItemValue) {        
            isExit = true;        
            break;        
        }        
    }        
    return isExit;        
}         
   
// 2.向select选项中 加入一个Item        
function jsAddItemToSelect(objSelect, objItemText, objItemValue) {        
    //判断是否存在        
    if (jsSelectIsExitItem(objSelect, objItemValue)) {        
        alert("该Item的Value值已经存在");        
    } else {        
        var varItem = new Option(objItemText, objItemValue);      
        objSelect.options.add(varItem);     
        alert("成功加入");     
    }        
}        
   
// 3.从select选项中 删除一个Item        
function jsRemoveItemFromSelect(objSelect, objItemValue) {        
    //判断是否存在        
    if (jsSelectIsExitItem(objSelect, objItemValue)) {        
        for (var i = 0; i < objSelect.options.length; i++) {        
            if (objSelect.options[i].value == objItemValue) {        
                objSelect.options.remove(i);        
                break;        
            }        
        }        
        alert("成功删除");        
    } else {        
        alert("该select中 不存在该项");        
    }        
}    


function jsRemoveAllItemAddother(objSelect) { 
        var count = objSelect.options.length;
        for (var i = count; i > 0; i--) {
                objSelect.options.remove(i);
        }
        var varItem = new Option('客户标识码', '7');      
        objSelect.options.add(varItem);  
        varItem = new Option('客户卡号', '8');    
        objSelect.options.add(varItem);  
        varItem = new Option('注册账号+服务密码', '5');    
        objSelect.options.add(varItem);  
        varItem = new Option('注册账号', '0');    
        objSelect.options.add(varItem);
        varItem = new Option('返回', 'back');    
        objSelect.options.add(varItem);
}    


function jsRemoveAllItemAddBlack(objSelect) { 
        var count = objSelect.options.length;
        for (var i = count; i > 0; i--) {
                objSelect.options.remove(i);
        }
        var varItem = new Option('固定电话', '11');      
        objSelect.options.add(varItem);  
        varItem = new Option('小灵通号', '12');    
        objSelect.options.add(varItem);  
        varItem = new Option('宽带帐号', '13');    
        objSelect.options.add(varItem);  
        varItem = new Option('手机号码', '9');    
        objSelect.options.add(varItem);
        varItem = new Option('其他方式', 'oth');    
        objSelect.options.add(varItem);
}    


   
   
// 4.删除select中选中的项    
function jsRemoveSelectedItemFromSelect(objSelect) {        
    var length = objSelect.options.length - 1;    
    for(var i = length; i >= 0; i--){    
        if(objSelect[i].selected == true){    
            objSelect.options[i] = null;    
        }    
    }    
}      
   
// 5.修改select选项中 value="paraValue"的text为"paraText"        
function jsUpdateItemToSelect(objSelect, objItemText, objItemValue) {        
    //判断是否存在        
    if (jsSelectIsExitItem(objSelect, objItemValue)) {        
        for (var i = 0; i < objSelect.options.length; i++) {        
            if (objSelect.options[i].value == objItemValue) {        
                objSelect.options[i].text = objItemText;        
                break;        
            }        
        }        
        alert("成功修改");        
    } else {        
        alert("该select中 不存在该项");        
    }        
}        
   
// 6.设置select中text="paraText"的第一个Item为选中        
function jsSelectItemByValue(objSelect, objItemText) {            
    //判断是否存在        
    var isExit = false;        
    for (var i = 0; i < objSelect.options.length; i++) {        
        if (objSelect.options[i].text == objItemText) {        
            objSelect.options[i].selected = true;        
            isExit = true;        
            break;        
        }        
    }              
    //Show出结果        
    if (isExit) {        
        alert("成功选中");        
    } else {        
        alert("该select中 不存在该项");        
    }        
}        
   
// 7.设置select中value="paraValue"的Item为选中    
document.all.objSelect.value = objItemValue;    
       
// 8.得到select的当前选中项的value    
var currSelectValue = document.all.objSelect.value;    
       
// 9.得到select的当前选中项的text    
var currSelectText = document.all.objSelect.options[document.all.objSelect.selectedIndex].text;    
       
// 10.得到select的当前选中项的Index    
var currSelectIndex = document.all.objSelect.selectedIndex;    
       
// 11.清空select的项    
document.all.objSelect.options.length = 0;