//global variables that can be used by ALL the function son this page.
var inputs;
var imgFalse ='../../img/checboxunchecked.jpg';
var imgTrue ='../../img/checboxchecked.jpg';

//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 {
				img.src = imgFalse;
			}

			//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) {
	
	if(inputs[i].checked) {
		inputs[i].checked = '';
		document.getElementById('checkImage'+i).src=imgFalse;
	} else {
		inputs[i].checked = 'checked';
		document.getElementById('checkImage'+i).src=imgTrue;
		inputs = document.getElementsByTagName('input');
		if (inputs[i].name!='sendto#')
		{
			for(var isendto=0; isendto < inputs.length; isendto++)
				if (inputs[isendto].name=='sendto#')
					break; // find the i of 			
			sendto=document.getElementById('checkImage'+isendto);
			inputs[isendto].checked='checked';
			sendto.src=imgTrue;
		}
	}


}

window.onload = init;