var _t_esential = true;

function _onLoad(){
	document.getElementById('esential').scrollTop=0;
	esential();
}

function esential(){
	var speed=1;
	if(_t_esential) document.getElementById('esential').scrollTop+=speed;
	if(document.getElementById('esential').scrollTop>=document.getElementById('esential').scrollHeight-document.getElementById('esential').offsetHeight) {document.getElementById('esential').scrollTop=0;}
	window.setTimeout("esential()", 70);
}

function esentialpause(){
	_t_esential = false;
}
function esentialstart(){
	_t_esential = true;
}