var missingThumbnailSrc = "/images/thumb_default.png";
var rand_no = Math.floor((13)*Math.random()) + 1;
//console.log(rand_no);

function addLoadEvent(func) {
  var oldonload = window.onload;
  if (typeof window.onload != 'function') {
    window.onload = func;
  } else {
    window.onload = function() {
      if (oldonload) {
        oldonload();
      }
      func();
    }
  }
}

addLoadEvent(function() {
	if((location.href.substr(location.href.length-18)=="/index.php/sigen/")||(location.href.indexOf('/index.php/sigen/index')!=-1)||(location.href.substr(location.href.length-17)=="/index.php/sigen")) {
		$("#banner_pic").html('<img width="652" height="252" src="/images/main_img'+rand_no+'.jpg"/>');
	} else {
		$("#banner_pic").remove();
	}
	$("#navbar ul.navmenu li ul").css("top",($("#navbar").offset().top+38)+"px");
	$("#navbar img").each(function() {
		$(this).mouseover(function() {
			this.src = this.src.replace(/_off/g,"_on");
		}).mouseout(function() {
			this.src = this.src.replace(/_on/g,"_off");	
		});
	});
});

function missingThumb(img) {
	if (img.src !== missingThumbnailSrc)
	{
		img.src=missingThumbnailSrc;
	}
}
sfHover = function() {
	var sfEls = document.getElementById("navbar").getElementsByTagName("LI");
	for (var i=0; i<sfEls.length; i++) {
		sfEls[i].onmouseover=function() {
			this.className+=" sfhover";
		}
		sfEls[i].onmouseout=function() {
			this.className=this.className.replace(new RegExp(" sfhover\\b"), "");
		}
	}
}
if (window.attachEvent) window.attachEvent("onload", sfHover);