function openNew(url,name,width,height) {
	var options = "width=" + width + ",height=" + height + "toolbar=no,location=no,directories=no,status=no,menubar=no,scrollbars=no,resizable=no,copyhistory=no";

	new_window = window.open(url, name, options);
	window.self.name = "main";
	new_window.focus();
}

function openNewwithScrollers(url,name,width,height) {
	var options = "width=" + width + ",height=" + height + "toolbar=no,location=no,directories=no,status=no,menubar=no,scrollbars=yes,resizable=yes,copyhistory=no";

	new_window = window.open(url, name, options);
	window.self.name = "main";
	new_window.focus();
}

function openNewCenter(url,name,b,h) {

	var winleft = (screen.width - b) / 2;
	var winUp = (screen.height - h) / 2;

	options = "left="+ winleft +", top=" + winUp + ", width=" + b + ", height=" + h;

	options= options+ ",toolbar=no,location=no,directories=no,status=no,menubar=no,scrollbars=yes,resizable=yes,copyhistory=no";

	new_window = window.open(url, name, options);
	window.self.name = "main";
	new_window.focus();
}