function chBg(id){		
	if(document.getElementById(id).className!='active_bg'){		
		document.getElementById(id).className = 'active_bg';
		document.getElementById('a'+id).className = 'active';
	} else {
		document.getElementById(id).className = '';
		document.getElementById('a'+id).className = '';
	}
}
function mActive(id){		
		document.getElementById(id).className = 'active_bg';
		document.getElementById('a'+id).className = 'active';
}


function hb(id){

if(document.getElementById("div"+id)){

if(document.getElementById(id).className!='active_bg') {
if(document.getElementById('a'+id).className!='active') document.getElementById(id).className = '';
}
document.getElementById("div"+id).style.display = 'none';
}

}

function hideBlock(id){
if(document.getElementById(id).className!='active_bg') {
document.getElementById("a"+id).className = "";
document.getElementById(id).className = '';
}

}

function setMenu(id){

document.getElementById("a"+id).className = "active";
document.getElementById(id).className = 'active_bg';
}


function expand(thistag) {
styleObj = document.getElementById(thistag).style;
if (styleObj.display=='none') {styleObj.display = '';}
else {styleObj.display = 'none';}
}