if (document.getElementById)
 document.write('<style type="text/css"> .option2 { display: none; } <'+'/style>');
function simple_tree(elm) {
 var option2=elm.parentNode.getElementsByTagName("div")[0];
 if (option2.style.display == "block") option2.style.display="none";
 else option2.style.display="block";
}

img = new Array("img/common/search/h_kodawari_off.gif","img/common/search/h_kodawari_on.gif");
i=0;
function JobChange(){   
i++;
i %=img.length;
document.job_imgchange.src = img[i];
}