var submitTimer; //do czyszczenia zegara
window.onload = function() {
  	var komorki = getElementsByClassName('roll');
	
	for (var i=0;i<komorki.length;i++) {
		komorki[i].onclick = doRoll;
	}
}

function doRoll() {
	var myDiv = this.getElementsByTagName('div');
	if (myDiv[0].className == 'rollDiv') {
		myDiv[0].className = 'rollDivOn';
	}
	else myDiv[0].className = 'rollDiv';
}

//alias na getElementById
function $() {

	var elements = new Array();
	
	for (var i = 0; i < arguments.length; i++) {

		var element = arguments[i];

		if (typeof element == 'string') {
			if (document.getElementById) {
				element = document.getElementById(element);
			} 
			else if (document.all) {
				element = document.all[element];
			}
		}

		elements.push(element);

	}

	if (arguments.length == 1 && elements.length > 0) {
			return elements[0];
	}
	else {
		return elements;
	}
}

function getElementsByClassName(cn){
  var arr = new Array(); 
  var els = document.getElementsByTagName("*");
  var exp= new RegExp("^(.* )?"+cn+"( .*)?$", "g");
  for (var i = 0; i < els.length; i++ ){
    if (exp.test(els[i].className)){
      arr.push(els[i]);
    }
  }
  return arr;
}