var scrollb
var cphwidth
var cphheight
var cphtop
var cphleft

function windowCPH(cphurl, cphname, cphwidth, cphheight, scrollb) {
	if (typeof(scrollb) == 'undefined') {
        	scrollb = 0;
    	}
	cphtop = (screen.height - cphheight) / 2 - 20;
	cphleft = (screen.width - cphwidth) / 2;
	
	nav = navigator.appName;
	ns = (nav == 'Netscape') ? 1:0
	ie = (nav == 'Microsoft Internet Explorer') ? 1:0
	 
	if (ns) {
	cphheight = cphheight - 22;
	}
	
	cphpopup = window.open(cphurl,cphname,'resizable=0,status=0,scrollbars='+scrollb+',location=0,width='+cphwidth+',height='+cphheight+',top='+cphtop+',left='+cphleft+'');
}