function setHeight(){
	if (document.getElementById) {
		var side = document.getElementById('sidebar').offsetHeight;
		var body = document.getElementById('body').offsetHeight;
		var foot = document.getElementById('footer').offsetHeight;


		var margin = 18;
		

		
		if ( side > ( body + foot ) )
			body = side - foot;
			document.getElementById('body').style.height = body + 'px';
		}
		else{);
			side = body + foot;
			document.getElementById('sidebar').style.height = side + 'px';
		}
		
		document.getElementById('wrapper').style.height = ( side ) + 'px';
		document.getElementById('footer').style.top = ( margin + body ) + 'px';
		
	}
}

window.onload = function(){
	setHeight();
}

window.onresize = function() {
	setHeight();
}


function confirmS(message){
	var agree=confirm(message);
	if (agree)	return true ;
	else		return false ;
}