//global variables that can be used by ALL the function son this page.
var inputs;
var imgFalse = '/jiggy/false.png';
var imgTrue = '/jiggy/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 {
				img.src = imgFalse;
			}

			//set image ID and onclick action
			img.id = 'checkImage'+i;
			//set image 
			img.onclick = new Function('checkChange('+i+')');
			img.style.verticalAlign = "middle";
			//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;
	}
	//document.getElementById('driller').submit();
	document.getElementById('pg').value='0'; // reseting to page 0 on a new classification
        document.getElementById('url').value=''; // reset the url attribute to change title
}
function toggleBoxes() {

	for(var i=0; i < inputs.length; i++) {

		if(inputs[i].getAttribute('type')=='checkbox') {
			
			if(inputs[i].style.display=='none') {
				inputs[i].style.display='inline';
			} else {
				inputs[i].style.display='none';
			}
		}
	}
}
   var http_request = false;
   function makeRequest(url, parameters) {
      http_request = false;
      if (window.XMLHttpRequest) { // Mozilla, Safari,...
         http_request = new XMLHttpRequest();
         if (http_request.overrideMimeType) {
         	// set type accordingly to anticipated content type
            //http_request.overrideMimeType('text/xml');
            http_request.overrideMimeType('text/html');
         }
      } else if (window.ActiveXObject) { // IE
         try {
            http_request = new ActiveXObject("Msxml2.XMLHTTP");
         } catch (e) {
            try {
               http_request = new ActiveXObject("Microsoft.XMLHTTP");
            } catch (e) {}
         }
      }
      if (!http_request) {
         alert('Cannot create XMLHTTP instance');
         return false;
      }
      http_request.onreadystatechange = alertContents;
      http_request.open('GET', url + parameters, true);
      http_request.send(null);
   }

   function alertContents() {
      if (http_request.readyState == 4) {
         if (http_request.status == 200) {
            //alert(http_request.responseText);
            result = http_request.responseText;
            document.getElementById('mainzone').innerHTML = result;            
         } else {
            alert('There was a problem with the request.');
         }
      }
   }
   
   function addme(e)
   {
	  var elem = document.getElementById('driller');
	  var newstuff = document.getElementById(e);
	  elem.appendChild(newstuff);
	  //document.body.appendChild(elem);
   }
   function changepage(p)
   {
	  document.getElementById('pg').value=p;
	  get(document.getElementById('driller'));
   }
 function get(obj) {
      var getstr = "?";
      for (i = 0; i < obj.elements.length; i++) {
                formElem = obj.elements[i];
                switch (formElem.type) {
			case 'text' : 
			case 'select-one' : 
			case 'hidden' : 
			case 'password' : 
			case 'textarea' : 
                               getstr += formElem.name + 
                               '=' + escape(formElem.value) + '&'
			break;
		        case 'radio' :    
				if(formElement.checked) 
					{ 
					getstr += formElement.name + '=' + paramEscape(formElement.value) + '&'; 
					} 
					break; 
                        case 'checkbox':
			if (formElem.checked) {
				getstr += formElem.name + "=" + formElem.value + "&";
			}
                        break;
		}
      }
     //xigajax('chess_pickem.php'+getstr,'mainzone','1','');
      makeRequest('/chess_pickem.php', getstr);
   }
window.onload = init;