function showDivJobs(name, otherDivs) {
	if (otherDivs) {
  	for (i in otherDivs) {
  		if (document.getElementById(otherDivs[i])) {
  			document.getElementById(otherDivs[i]).style.display='none';
  		}
  	}
  }
	if (document.getElementById(name)) {
		document.getElementById(name).style.display='block';
	}
}
  
function hideDivJobs(name) {
	document.getElementById(name).style.display='none';
}
  
function roll(img_name, img_src) {
  document[img_name].src = img_src;
}