function tab_change( obj, container ) {

		var c, a_tag;
		var oLoc = document.getElementById( container );
		var oUlc = oLoc.getElementsByTagName("thead")[0].getElementsByTagName("ul")[0];
		var oLi = oUlc.getElementsByTagName( "li" );
		var oDiv = oLoc.getElementsByTagName("tbody")[0].getElementsByTagName("div");

		for (	c = 0; c < oLi.length; c++ ) {
			
			a_tag = oLi[c].getElementsByTagName( "a" )[0];
			if ( a_tag == obj ) {			
				a_tag.style.background = "#ffffff";
				oDiv[c].style.display = "block";
			}
			else {
				a_tag.style.background = "#e4f0e9";
				oDiv[c].style.display = "none";
			}
		}
	}
	function init_tab( container ) {

		var oLoc = document.getElementById(container);
		var oUlc = oLoc.getElementsByTagName("thead")[0].getElementsByTagName("ul")[0];
		var oLi = oUlc.getElementsByTagName( "li" );
		tab_change( oLi[0].getElementsByTagName( "a" )[0], container );
	}