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;
}

// Example:
// writeCookie("myCookie", "my name", 24);
// Stores the string "my name" in the cookie "myCookie" which expires after 24 hours.

function writeCookie(name, value, hours)
{
  var expire = "";
  if(hours != null)
  {
    expire = new Date((new Date()).getTime() + hours * 3600000);
    expire = "; expires=" + expire.toGMTString();
  }
  document.cookie = name + "=" + escape(value) + expire;
}

function getRandomImg(){

	var imagesarr = new Array( 
	"001.jpg", 
	"002.jpg"); 

	kk ='';
	
	if(readCookie('centeraw_random_image')==''){
		var my_img = Math.floor(Math.random() * imagesarr.length) ;
		document.getElementById("content").style.backgroundImage="url(../images/backgrounds/" + imagesarr[my_img] + ")";				
		writeCookie("centeraw_random_image", imagesarr[my_img], 24);
	}else{
		kk = readCookie('centeraw_random_image');
		while(kk==readCookie('centeraw_random_image')){
			var my_img = Math.floor(Math.random() * imagesarr.length) ;			
			kk = imagesarr[my_img];
		}
		writeCookie("centeraw_random_image", kk, 24);
		document.getElementById("content").style.backgroundImage="url(../images/backgrounds/" + kk + ")";				

		
	}
}

function search() {
	
	if (document.search.search_text.value != '') {

		document.search.submit();
	}
}