//global variables that can be used by ALL the function son this page.
var inputs;
var imgFalse = 'themes/taborhelyek/pipa/false.png';
var imgGroupFalse = 'themes/taborhelyek/pipa/false2.png';
var imgTrue = 'themes/taborhelyek/pipa/true.png';
var imgGroupTrue = 'themes/taborhelyek/pipa/true.png';

//this function runs when the page is loaded, put all your other onload stuff in here too.
function init() {
	replaceChecks();
}

function replaceChecks() {
	//get all the input fields on the page
	inputs = document.getElementsByTagName('input');
	//cycle trough the input fields
	for(var i=0; i < inputs.length; i++) {
		//check if the input is a checkbox
		if(inputs[i].getAttribute('type') == 'checkbox') {
			//create a new image
			var img = document.createElement('img');
			//check if the checkbox is checked
			if(inputs[i].checked) {
				img.src = imgTrue;
			} else {
			    var cls = inputs[i].getAttribute('class');
			    var clsarr = cls.split(',');
			    img.title = inputs[i].title;
			    if (clsarr.length == 1) {
				img.src = imgFalse;
			    } else {
				img.class = 'group';
				img.src = imgGroupFalse;
			    }
			}

			//set image ID and onclick action
			img.id = 'checkImage'+i;
			//set image 
			img.onclick = new Function('checkChange('+i+')');
			//place image in front of the checkbox
			inputs[i].parentNode.insertBefore(img, inputs[i]);
			//hide the checkbox
			inputs[i].style.display='none';
		}
	}
}

//change the checkbox status and the replacement image
function checkChange(i) {
    var img = document.getElementById('checkImage'+i);
    /*
    var cls = inputs[i].getAttribute('class');
    var clsarr = cls.split(',');*/
    if(inputs[i].checked) {
      /*if(img.class == 'group') {
	    for(j=0; j < clsarr.length; j++) {
		var img0 = document.getElementById('checkImage'+j);
		inputs[cls[j]].checked = '';
		img0.src = imgFalse;
	    }
	    img.src =  imgGroupFalse;
	} else {
	    img.src =  imgFalse;
	}*/
	img.src =  img.class == 'group' ? imgGroupFalse : imgFalse;
	inputs[i].checked = '';
    } else {
      /*if(img.class == 'group') {
	    for(j=0; j < clsarr.length; j++) {
		var img0 = document.getElementById('checkImage'+j);
		inputs[cls[j]].checked = 'checked';
		img0.src = imgTrue;
	    }
	    img.src =  imgGroupTrue;
	} else {
	    img.src =  imgTrue;
	    }*/
	img.src =  img.class == 'group' ? imgGroupTrue : imgTrue;
	inputs[i].checked = 'checked';
    }
}

window.onload = init;