preloadImages = function(imglist) {
	var imgs = new Array();
	var count;
	if (document.images) {
		for (count=0; count<imglist.length; count++) {
			imgs[count]=new Image(); imgs[count].src=imglist[count];
		}
	}
}

sfHover = function(idList, tagList) {
	var count;
	for (count=0; count<idList.length; count++) {
		var sfEls = document.getElementById(idList[count]).getElementsByTagName(tagList[count]);
		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'), '');
			}
		}
	}	
}

//Special Functions for onhover Content
function showelement(id) {
  changeclass('show','hidden');
  document.getElementById(id).className='show';
}
function resetelement(id) {
  changeclass('show','hidden');
}


function changeclass(class_old,class_new)
{
  var obj=getElementsByClassName(class_old);

  for(i=0;i<obj.length;i++)
  {
    obj[i].className=class_new;    
  }
}

function getElementsByClassName(class_name)
{
  var all_obj,ret_obj=new Array(),j=0,teststr;

  if(document.all)all_obj=document.all;
  else if(document.getElementsByTagName && !document.all)
    all_obj=document.getElementsByTagName("*");

  for(i=0;i<all_obj.length;i++)
  {
    if(all_obj[i].className.indexOf(class_name)!=-1)
    {
      teststr=","+all_obj[i].className.split(" ").join(",")+",";
      if(teststr.indexOf(","+class_name+",")!=-1)
      {
        ret_obj[j]=all_obj[i];
        j++;
      }
    }
  }
  return ret_obj;
}