function onBtnOver(id)
{
	document.getElementById("tab" + id).className = "tab tab_act";	
	document.getElementById("tab" + id + "_rightside").className = "tab_rightside rightside_act";
	document.getElementById("tab" + id + "_leftside").className = "tab_leftside leftside_act";					
}

function onBtnOut(id)
{
	document.getElementById("tab" + id).className = "tab";	
	document.getElementById("tab" + id + "_rightside").className = "tab_rightside";
	document.getElementById("tab" + id + "_leftside").className = "tab_leftside";	
}