按Ctrl+Enter进行提交表单

输入域中的事件:onkeydown="ctrlEnter(event)"

function isKeyTrigger(e,keyCode){    
    var argv = isKeyTrigger.arguments;    
    var argc = isKeyTrigger.arguments.length;    
    var bCtrl = false;    
    if(argc > 2){    
        bCtrl = argv[2];    
    }    
    var bAlt = false;    
    if(argc > 3){    
        bAlt = argv[3];    
    }    
    var nav4 = window.Event ? true : false;    
    if(typeof e == 'undefined') {    
        e = event;    
    }    
    if(bCtrl &&    
        !((typeof e.ctrlKey != 'undefined') ?     
        e.ctrlKey :    
        e.modifiers & Event.CONTROL_MASK > 0)) {    
        return false;    
    }    
    if( bAlt &&    
        !((typeof e.altKey != 'undefined') ?     
            e.altKey : e.modifiers & Event.ALT_MASK > 0)){    
        return false;    
    }    
    var whichCode = 0;    
    if (nav4) whichCode = e.which;    
    else if (e.type == "keypress" || e.type == "keydown") whichCode = e.keyCode;    
    else whichCode = e.button;    
        
    return (whichCode == keyCode);    
}    
   
function ctrlEnter(e){    
    var ie = navigator.appName == "Microsoft Internet Explorer" ? true : false;
    if(ie){    
        if(event.ctrlKey && event.keyCode == 13) {
            submit();    
        }    
        else {    
            if(isKeyTrigger(e,13,true)){
             	submit();
             }    
        }    
    }    
}