function doCouplet(){
	if((document.body.offsetWidth>800)){	
		couplet_left.style.visibility='visible';
		couplet_right.style.visibility='visible';	  
		couplet_left.style.top=20;
		couplet_left.style.left=5;
		couplet_right.style.top=20;
		couplet_right.style.right=5;
		couplet_right.style.width=150;
	}
	else{
		couplet_left.style.visibility='hidden';
		couplet_right.style.visibility='hidden';
	}
}

function disablead()
{
     adimage.style.visibility = "hidden";
}

function closelo()
{
	couplet_left.style.visibility='hidden';
	couplet_right.style.visibility='hidden';
}