browserName=navigator.appName;
browserVer=parseInt(navigator.appVersion);
if ((browserVer >= 4 & browserName == "Netscape") | (browserVer >= 4 & browserName == "Microsoft Internet Explorer"))
version="4";
else
version="3";
if (version=="4") {
width = screen.width-30;
height = screen.height;
if (width<=800)
{
	document.write("<img src='imag/Logo_800.jpg' border='0'>");
}
if (width>800 & width<=994)
{
	document.write("<img src='imag/Logo.jpg' border='0'>");
}
if (width >994)
{
	document.write("<img src='imag/Logo_1280.jpg' border='0'>");
}
}

function verifyEmail(email) {
	if (email.length <=0){
	   return false;
	}
	i=email.indexOf("@");
	j=email.indexOf(".",i);
	k=email.indexOf(",*$;+=");
	kk=email.indexOf(" ");
	jj=email.lastIndexOf(".")+1;
	len=email.length;
	if (!((i>0) && (j>(1+1)) && (k==-1) && (kk==-1) && (len-jj >=2) && (len-jj<=3))) {
       return false;
    }
	return true;
}