var opera = opera || false;

function _echo( p_msg, p_dum)
{
	if (p_dum != undefined)
	{
		var lm = arguments[0];
		for (var i = 1 ; i < arguments.length; ++ i)
		{
			lm += ' / ' + arguments[i];
		}
		p_msg = lm;
	}


	if (typeof console == 'object' && typeof console.log == 'function')
	{
		console.log( p_msg);
	}
	else if (typeof opera == 'object' && typeof opera.postError == 'function')
	{
		opera.postError( p_msg);
	}
	else if(navigator.userAgent.indexOf("Trident/5")>-1)
	{
		console.log( p_msg);
	}
	else
	{
		//alert( p_msg);
	}
}

function ReadAnswer(p_ans)
{
	_echo( 'Read jax answer : ' + p_ans.responseText);
}

function var_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";
			}
			else
			{
				dumped_text += level_padding + "'" + item + "' => \"" + value + "\"\n";
			}
		}
	}
	else
	{
		dumped_text = "===>" + arr + "<===(" + typeof( arr) + ")";
	}

	return dumped_text;
}

function printStackTrace() {
  var callstack = [];
  var isCallstackPopulated = false;
  try {
    i.dont.exist+=0; //doesn't exist- that's the point
  } catch(e) {
    if (e.stack) { //Firefox
      var lines = e.stack.split('\n');
      for (var i=0, len=lines.length; i<len; i++) {
        if (lines[i].match(/^\s*[A-Za-z0-9\-_\$]+\(/)) {
          callstack.push(lines[i]);
        }
      }
      //Remove call to printStackTrace()
      callstack.shift();
      isCallstackPopulated = true;
    }
    else if (window.opera && e.message) { //Opera
      var lines = e.message.split('\n');
      for (var i=0, len=lines.length; i<len; i++) {
        if (lines[i].match(/^\s*[A-Za-z0-9\-_\$]+\(/)) {
          var entry = lines[i];
          //Append next line also since it has the file info
          if (lines[i+1]) {
            entry += ' at ' + lines[i+1];
            i++;
          }
          callstack.push(entry);
        }
      }
      //Remove call to printStackTrace()
      callstack.shift();
      isCallstackPopulated = true;
    }
  }
  if (!isCallstackPopulated) { //IE and Safari
    var currentFunction = arguments.callee.caller;
    while (currentFunction) {
      var fn = currentFunction.toString();
      var fname = fn.substring(fn.indexOf("function") + 8, fn.indexOf('')) || 'anonymous';
      callstack.push(fname);
      currentFunction = currentFunction.caller;
    }
  }
  output(callstack);
}
 
function output(arr) {
  //Optput however you want
  alert(arr.join('\n\n'));
}

var Timer = Class.create({
	initialize: function(){
		var d = new Date();
		this.time = d.getTime() + d.getMilliseconds() / 1000;
	},
	Time: function(){
		var d = new Date();
		var t = d.getTime() + d.getMilliseconds() / 1000;
		var d = t - this.time;
		this.time = t;
		return d / 1000.0;
	}
});