// JavaScript Document
function setdisplay(className) 
  { 
	var arr = new Array(); 
	var elems = document.getElementsByTagName("*");
	for(var i = 0; i < elems.length; i++)
	{
	  var elem = elems[i];
	  var id = elem.getAttribute("id");
	  if (navigator.userAgent.indexOf("MSIE")>=0)
		{ var cls = elem.getAttribute("className");}
		else
		{ var cls = elem.getAttribute("class");	}
	  if(cls == className)
	  {
		arr[arr.length] = id;
		 elem.style.display="none";
	  }
	}
  }



function change_page(id)
{
	setdisplay("classblock");
	document.getElementById("block"+id).style.display="block";
}

function interval_change_page()
{
page_i=0;

picinter=setInterval("if(page_i==5){page_i=0;};page_i++;change_page(page_i);", 5000 );
}