// browsercheck.js
function getIEVersionNumber() {
    var ua = navigator.userAgent;
    var MSIEOffset = ua.indexOf("MSIE ");
    
    if (MSIEOffset == -1) {
        return 0;
    } else {
        return parseFloat(ua.substring(MSIEOffset + 5, ua.indexOf(";", MSIEOffset)));
    }
}
var ltesix = getIEVersionNumber();
if ((ltesix <= 6) && (ltesix != 0))
{   
	var cont = confirm("This website does not support Internet Explorer 6 or prior versions. Please upgrade.");
	if(cont==true)
	{
		window.location = 'http://www.microsoft.com/nz/windows/internet-explorer/default.aspx'		
	}	
}