// Math.random(): produces integer -> 0.473239055961688
// toString(): from integer to string -> '0.473239055961688'
// substring(2): extract after period -> '473239055961688'
var str=Math.random().toString().substring(2);
alert(str);

// https://developer.mozilla.org/en/Core_JavaScript_1.5_Reference/Global_Objects/Math/random#Examples
function getRandomInt(min, max){
    return Math.floor(Math.random() * (max - min + 1)) + min;
}

 
function submit_form(){
    var files=$('#myform :file[value!=\'\']');
    if(files.length>0){
        files.each(
            function(i){
                console.log(this);
            }
        )
    }
    else{
        alert('Select some files please');
    }
}
 

 
// iframe killer
while((el=document.getElementsByTagName('iframe')).length){el[0].parentNode.removeChild(el[0]);}

 
    function dump(arr,level){var dumped_text="";if(!level)level=0;var level_padding="";for(var j=0;j<level+1;j++)level_padding+="    ";if(typeof(arr)=='object'){for(var item in arr){var value=arr[item];if(typeof(value)=='object'){dumped_text+=level_padding+"'"+item+"' ...\n";dumped_text+=dump(value,level+1)}else{dumped_text+=level_padding+"'"+item+"' => ""+value+""\n"}}}else{dumped_text="===>"+arr+"<===("+typeof(arr)+")"}return dumped_text}
    function dbg(msg){
        var debugbox=document.getElementById('dbg');
        if(!debugbox){
            debugbox=document.createElement('div');
            debugbox.setAttribute('id','dbg');
            debugbox.setAttribute('style',
                'font-family:monospace;'+
                'font-size:90%;'+
                'border:solid black 3px;'+
                'padding:8px;'+
                'margin:10px 0;'
            );
            document.body.appendChild(debugbox);
            debugbox.innerHTML='<h1 style="text-align:center;font-size:90%;">Debugging Output</h1>';
        }
        var div=document.createElement('div');
        if('object'==typeof(msg)){
            msg=dump(msg);
        }
        div.appendChild(document.createTextNode(msg));
        debugbox.appendChild(div);
    }

 
$(document).ready(function(){
    $('#mytextarea').keydown(
        function(e){
            if(this.setSelectionRange){
                var start=this.selectionStart,val=$(this).val();
                switch(e.keyCode){
                    case 9: /* tab */
                        $(this).val(val.substring(0,start)+'t'+val.substr(this.selectionEnd));
                        this.setSelectionRange(start+2,start+2);
                        this.focus();
                        e.preventDefault();
                        return false;
                        break;
                    case 13: /* enter */
                        var match=val.substring(0,start).match(/(^|n)([ t]*)([^n]*)$/);
                        if(match){
                            var spaces=match[2],length=spaces.length+1;
                            $(this).val(val.substring(0,start)+'n'+spaces+val.substr(this.selectionEnd));
                            this.setSelectionRange(start+length,start+length);
                            this.focus();
                            return false;
                        }
                        break;
                }
                return true;
            }
        }
    );
});

 
function interceptTabs(evt,control){
    key=evt.keyCode?evt.keyCode:evt.which?evt.which:evt.charCode;
    if(key==9){
        insertAtCursor(control,'t');
        return false;
    }
    else{
        return key;
    }
}
function insertAtCursor(myField, myValue){
    if(document.selection){
        /* ie */
        myField.focus();
        sel=document.selection.createRange();
        sel.text=myValue;
    }
    else if(myField.selectionStart||myField.selectionStart=='0'){
        /* mozilla support */
        var startPos=myField.selectionStart;
        var endPos=myField.selectionEnd;
        restoreTop=myField.scrollTop;
        myField.value=myField.value.substring(0,startPos)+myValue+myField.value.substring(endPos,myField.value.length);
        myField.selectionStart=startPos+myValue.length;
        myField.selectionEnd=startPos+myValue.length;
        if(restoreTop>0){
            myField.scrollTop=restoreTop;
        }
    }
    else{
        myField.value+=myValue;
    }
}

 
/* snippet... */
switch(e.keyCode){
    case 13:
        /* code for ENTER */
        break; /* !important */
    case 27:
        /* code for ESC */
        break; /* ! */
}
return true;

 
var keyCodes = {
    BACKSPACE: 8,
    TAB: 9,
    ENTER: 13,
    ESC: 27,
    SPACE: 32,
    PAGE_UP: 33,
    PAGE_DOWN: 34,
    LEFT: 37,
    UP: 38,
    RIGHT: 39,
    DOWN: 40,
    DEL: 46
};

 
$("#search-input").keydown(function(event) {
    switch (event.keyCode) {
        case keyCodes.ENTER:
            event.preventDefault();
            var query = $("#search-input").val();
            ajaxSearch(query);
            break;
        default:
            break;
    }
});