function openwin(wUrl,wWidth,wHeight){
	scWidthCenter = screen.availWidth / 2;
	scHeightCenter = screen.availHeight / 2;
	wOption ="status=no,scrollbars=no,directories=no,menubar=no,resizable=no,toolbar=no,titlebar=no,location=no,width=" + wWidth + ",height=" + wHeight + ",left=" + (scWidthCenter - (wWidth / 2)) + ",top=" + (scHeightCenter - (wHeight / 2));
	window.open(wUrl,'win',wOption);
}