var inputs;
var imgFalse = 'images/false.png';
var imgTrue = 'images/true.png';
var imgWidth = 18;
var imgHeight = 16;

//function init() {
	
//}

function replaceChecks() {
	inputs = document.getElementsByTagName('input');
	for(var i=0; i < inputs.length; i++) {
		if(inputs[i].getAttribute('type') == 'checkbox') {
			var img = document.createElement('img');
						
			if(inputs[i].checked) {
				img.src = imgTrue;
			} else {
				img.src = imgFalse;
			}
			img.id = 'checkImage'+i;
			img.width = imgWidth;
			img.height = imgHeight;
			img.align = "left";
			img.onclick = new Function('checkChange('+i+')');
			
			inputs[i].parentNode.insertBefore(img, inputs[i]);
			inputs[i].style.display='none';
		}
	}
}

function checkChange(i) {
	if(inputs[i].checked) {
		inputs[i].checked = '';
		document.getElementById('checkImage'+i).src=imgFalse;
	} else {
		inputs[i].checked = 'checked';
		document.getElementById('checkImage'+i).src=imgTrue;
	}
}

//window.onload = init;