function opCenWin(link, targetname, w, h, scrollBars, statusBar) {
	if(navigator.userAgent.indexOf("Mozilla") != -1 && navigator.userAgent.indexOf("MSIE") != -1) {
		if(navigator.appVersion.substring(0,1)>=4) {
			l = (window.screen.width-w)/2;
			t = (window.screen.height-h)/2;
			t=t-30;
		}
		else {
			l = 10; t = 10;
		}
		window.open(link, targetname, "width="+w+",height="+h+",toolbar=0,directories=0,location=0,menuBar=0,resizable=1,status="+statusBar+",scrollBars="+scrollBars+",left="+l+",top="+t);
	}
	else {
		if(scrollBars == "1") sb = "yes";
		else sb = "no";
		if(statusBar == "1") st = "yes";
		else st = "no";
		window.open(link, targetname, "width="+w+",height="+h+",toolbar=no,directories=no,location=no,menuBar=no,resizable=yes,status="+st+",scrollBars="+sb);
	}
}