function launchwin(winUrl,winName,winX,winY,winFeatures){
	winTop  = (screen.height-winY)/2;
	winLeft = (screen.width-winX)/2;
	newWin=window.open(winUrl,winName,'width='+winX+',height='+winY+',top='+winTop+',left='+winLeft+','+winFeatures);
}