function openWindow(url, windowname) {
	var openWindow;
	var windowwidth = 640;
	var windowheight = 480;
	openWindow = window.open(url, windowname, 'toolbar=no,width=' + windowwidth + ',height=' + windowheight + ',status=yes,scrollbars=yes,menubar=no,top=0,left=0');
	if (openWindow.focus!=null) openWindow.focus();
}

function openWindow1(url, windowname) {
	var openWindow1;
	var sWidth = window.screen.availWidth;
	var sHeight = window.screen.availHeight;
	var windowwidth = 560;
	var windowheight = 480;
	var vWidth = (sWidth - windowwidth)/2;
	var vHeight = (sHeight - windowheight)/2;
	openWindow1 = window.open(url, windowname, 'toolbar=no,width=' + windowwidth + ',height=' + windowheight + ',status=no,scrollbars=yes,menubar=no,top='+vHeight+',left='+vWidth);
	if (openWindow1.focus!=null) openWindow1.focus();
}

function openWindow2(url, windowname) {
	var openWindow2;
	var windowwidth = 454;
	var windowheight = 250;
	openWindow2 = window.open(url, windowname, 'toolbar=no,width=' + windowwidth + ',height=' + windowheight + ',status=no,scrollbars=no,menubar=no,top=0,left=0');
	if (openWindow2.focus!=null) openWindow2.focus();
}

function openWindow3(url, windowname) {
	var openWindow3;
	var windowwidth = 524;
	var windowheight = 339;
	openWindow3 = window.open(url, windowname, 'toolbar=no,width=' + windowwidth + ',height=' + windowheight + ',status=no,scrollbars=no,menubar=no,top=0,left=0');
	if (openWindow3.focus!=null) openWindow3.focus();
}