function ScrollArrows(v) {
 
  // 0: check content area height (scroll needed or not)
  // 1: no up
  // 2 : no down
  // 3 : both
  
   dah = 350;
   
   supdata = 0;
   sdndata = 0;
   
   supObj = document.getElementById("ScrollUp");
   sdnObj = document.getElementById("ScrollDown");
 
   caObj = document.getElementById("ContentArea");


   
   if(v == 0) {
      
      cash = caObj.scrollHeight;
   
      setCookie("SH", "0");
      
      if(cash > dah) {
         sdndata = 1;
      }
      
   }
   else if(v == 1) {
     sdndata = 1;
   }
   else if(v == 2) {
     supdata = 1;
   }
   else if(v == 3) {
     supdata = 1;
     sdndata = 1;
   }
   
   if(supdata == 0)
      supObj.innerHTML = "<img src='graphics/arrow_up2.gif'/>";
   else if(supdata == 1)
      supObj.innerHTML = "<img src='graphics/arrow_up2.gif' onmousedown='javascript:ScrollingArea(-72); '/>";
   
   if(sdndata == 0)
      sdnObj.innerHTML = "<img src='graphics/arrow_dn2.gif'/>";
   else if(sdndata == 1)
      sdnObj.innerHTML = "<img src='graphics/arrow_dn2.gif' onmousedown='javascript:ScrollingArea(72);'/>";
   
 } // end function
 
 
 function ScrollingArea(v) {
 
   sh = parseFloat(getCookie("SH"));
 
   caObj = document.getElementById("ContentArea");

   cash = caObj.scrollHeight - 350;

   scrollto = sh + v;
   
   setCookie("SH", scrollto);   

   caObj.scrollTop = scrollto;

   if(scrollto <= 0)
     vv = 1;
   else if(scrollto >= cash)
     vv = 2;
   else
     vv = 3;  
     
   ScrollArrows(vv);
      
 } // end function
 
 
 
 function getCookie(name) {
	var cname = name + "=";
	var dc = document.cookie;
	
	if (dc.length > 0) {
		begin = dc.indexOf(cname);
		if (begin != -1) {
			begin += cname.length;
			end = dc.indexOf(";", begin);
			if (end == -1) end = dc.length;
				return unescape(dc.substring(begin, end));
		}
	}
	return null;
	
 } // end function


 function setCookie(name, value, expires, path, domain, secure) {

	document.cookie = name + "=" + escape(value) + 
	((expires == null) ? "" : "; expires=" + expires.toGMTString()) +
	((path == null) ? "" : "; path=" + path) +
	((domain == null) ? "" : "; domain=" + domain) +
	((secure == null) ? "" : "; secure");

 } // end function