var nCnt = 8; 
var nRand=Math.floor(Math.random()*nCnt); 
var sStyle = ""; 
var nCss = ""; 
var nCssOld = readCookie('nCss'); 

while(nRand < 1 || nRand == nCssOld) {
	nRand=Math.floor(Math.random()*nCnt); 
}

//if (nRand == 0) nCss = "01"; 
//else 
if (nRand < 10) nCss = "0" + nRand; 
else nCss = nRand; 

sStyle = '<link rel="stylesheet" type="text/css" href="stylesheets/spg' + nCss + '.css" media="screen, projection" />'; 

document.write(sStyle); 
createCookie('nCss',nCss,0)

function createCookie(name,value,days)
{
	if (days)
	{
		var date = new Date();
		date.setTime(date.getTime()+(days*24*60*60*1000));
		var expires = "; expires="+date.toGMTString();
	}
	else var expires = "";
	document.cookie = name+"="+value+expires+"; path=/";
}

function readCookie(name)
{
	var nameEQ = name + "=";
	var ca = document.cookie.split(';');
	for(var i=0;i < ca.length;i++)
	{
		var c = ca[i];
		while (c.charAt(0)==' ') c = c.substring(1,c.length);
		if (c.indexOf(nameEQ) == 0) return c.substring(nameEQ.length,c.length);
	}
	return null;
}

function eraseCookie(name)
{
	createCookie(name,"",-1);
}



    function loginpresubmit() {
 if (document.loginform.uid.value.length < 1 || document.loginform.uid.value
== "Your UserID") {
     alert ("Please enter your User ID");
     return false;
 }
 if (document.loginform.pword.value.length < 1 ) {
     alert ("Please enter your password");
     return false;
 }  
 document.loginform.submit();      
    }