function isBrowserCompatible(){                
	var bCompatible=0;
        var browserType = navigator.appName;                
	var xy = navigator.appVersion;                
	xz = xy.substring(0,4);
                //alert(navigator.appCodeName);
                //alert(browserType.search(/netscape/i));
                if (((browserType.search(/mozilla/i)>-1) || (browserType.sear
ch(/Netscape/i)>-1))&& parseFloat(xz) >= 1.5){       
                 bCompatible=1;
                }else if (browserType.search(/explorer/i) && parseFloat(xz) >
= 6){                        // should be 6+
                        bCompatible=1;                
		}else if (browserType.search(/safari/i) && parseFloat(xz) >= 
3){
                        // should be 3+
                        bCompatible=1;
                }else if (browserType.search(/opera/i) && parseFloat(xz) >= 9
){
                        // should be 9+
                        bCompatible=1;
                }

                return bCompatible;
        }





if (!isBrowserCompatible()){
                document.writeln("<br>");
                document.write("<center><font color=\"red\">Your browser is not compatible with particular features of this site. Please upgrade your browser to any of the browsers listed below.<br>");
                document.writeln("Firefox 1.5\+<br>");
                document.writeln("Safari 3\+<br>");
                document.writeln("Internet Explorer 6\+<br>");
                document.writeln("Opera 9\+</font></center>");
        }