function showBullets( id ) {
	//  hide list text
	if (document.getElementById( "td_tablist_href4" )) {

	document.getElementById( "td_tablist_tab4_div" ).style.display = "none";
}
	if (document.getElementById( "td_tablist_href3" )) {
	document.getElementById( "td_tablist_tab3_div" ).style.display = "none";

}
	if (document.getElementById( "td_tablist_href2" )) {
	
	document.getElementById( "td_tablist_tab2_div" ).style.display = "none";

}
	if (document.getElementById( "td_tablist_href1" )) {
	document.getElementById( "td_tablist_tab1_div" ).style.display = "none";

}


	//  show list text
	document.getElementById( "td_tablist_tab" + id + "_div" ).style.display = "block";
}


function setTextFocus( id ) {
var cls = getClassAttributeNameForNavigator();		//  requires td.js
	//  unhighlite tabs text]
	if (document.getElementById( "td_tablist_href4" )) {
	
	document.getElementById( "td_tablist_href4" ).setAttribute( cls, "unhighlited"  );
}
 if (document.getElementById( "td_tablist_href3" )) {
	
	document.getElementById( "td_tablist_href3" ).setAttribute( cls, "unhighlited"  );

}
 if (document.getElementById( "td_tablist_href2" )) {
	
	document.getElementById( "td_tablist_href2" ).setAttribute( cls, "unhighlited"  );

}
 if(document.getElementById( "td_tablist_href1" )) {
	document.getElementById( "td_tablist_href1" ).setAttribute( cls, "unhighlited"  );
}
	//  highlite tab text, use default style
	document.getElementById( "td_tablist_href" + id ).setAttribute( cls, ""  );
}


function changeTab( id ) {
	//  change tab background
	if( id == 1 ) {
		document.getElementById( "td_tablist" ).style.background = "url(../images/mtab_2.gif)";
		document.getElementById( "tabs_bg" ).style.background = "url(../images/bg_features.gif)";
	}
	else if( id == 2 ) {
		document.getElementById( "td_tablist" ).style.background = "url(../images/mtab_2.gif)";
		document.getElementById( "tabs_bg" ).style.background = "url(../images/bg_specifications.gif)";
	}
	else if( id == 3 ) {
		document.getElementById( "td_tablist" ).style.background = "url(../images/mtab_2.gif)";
		document.getElementById( "tabs_bg" ).style.background = "url(../images/bg_includes.gif)";
	}
	else if( id == 4 ) {
		document.getElementById( "td_tablist" ).style.background = "url(../images/mtab_2.gif)";
		document.getElementById( "tabs_bg" ).style.background = "url(../images/bg_testimonials.gif)";
	}

	setTextFocus( id );
	showBullets( id );
}

	
	/*
	Misc/Utils methods.
*/


function getClassAttributeNameForNavigator() {
    //  fix for IE, the <class> attribute is called <className>
    if (navigator.userAgent.indexOf("MSIE") != -1)
        return "className";
    else
        return "class";
}