//<![CDATA[

function enhanceCheckboxes() {

  var els=document.getElementsByTagName("input");

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

    if (els[i].type=='checkbox') { 

        els[i].style.display='none';

         var img = document.createElement("img");

         if (els[i].checked) {

        img.src="./images/checked.gif";

        img.title="Checked";

      }

      else {

        img.src="./images/unchecked.gif";

        img.title="Unchecked";

      } 

        img.onclick= toggleCheckbox;

           els[i].parentNode.insertBefore(img, els[i]);

          }  

    }

}



function toggleCheckbox() {

  if (this.title == "Checked") {

    this.src="./images/unchecked.gif";

    this.title="Unchecked";

    this.nextSibling.checked=false;

     }

  else {

     this.src="./images/checked.gif";

    this.title="Checked";

    this.nextSibling.checked=true;

   }

}



function submitform()

{

 document.forms['tourform'].submit();

}

//]]>