// Call the function elsewhere to read the value of the cookie
// Example: alert(readCookie("myCookie"));

function readCookie(name)
{
	var cookieValue = "";
	var search = name + "=";
	if(document.cookie.length > 0)
  	{ 
    	offset = document.cookie.indexOf(search);
    	if (offset != -1)
    	{ 
      		offset += search.length;
      		end = document.cookie.indexOf(";", offset);
      		if (end == -1) end = document.cookie.length;
      		cookieValue = unescape(document.cookie.substring(offset, end))
    	}
  	}
return cookieValue;
}


// Call the function elsewhere to write the cookie
// Example: writeCookie("myCookie", "myName");
// Stores the string "myName" in the cookie "myCookie"

function writeCookie(name, value)
{
	var expire;
	var expiredate="";
	
	//Set the expiration date below (one year from current)
	expire = new Date();
	expire.setDate(expire.getDate() + 365);
	expiredate = "; expires=" + expire.toGMTString();

  	document.cookie = name + "=" + escape(value) + expiredate;

}


function randompickpic()
{
	var maxnum=5;	
	var newnum=0;
	var lastnum=readCookie("somainpic");
	
	while((newnum==lastnum) || (newnum==0))
	{
		newnum=Math.floor(Math.random()*(maxnum))+1;		
	
		//catch
		if(newnum<1)
		{
			newnum=1;	
		}else if(newnum>maxnum){
			newnum=maxnum;
		}
	}

	writeCookie("somainpic", newnum);
	document.writeln("<div id=\"mainmidrow\" class=\"mainmidrowbg"+newnum+"\">");
}