// ######################################################## //
//  JS TO RESIZE TEXT, SET IMAGE INSTANCES & WRITE COOKIES  //
//  COPYRIGHT (c) 2007 GOSS INTERACTIVE                     //
// ######################################################## //

function textSizeChanger()
{
	 var recievedCookieData = getCookie("fontsize");
	 swapSize(recievedCookieData);
}

// Get cookie function - Return the value of the cookie
function getCookie(name) {
    var dc = document.cookie;
    var prefix = name + "=";
    var begin = dc.indexOf("; " + prefix);
    if (begin == -1) {
        begin = dc.indexOf(prefix);
        if (begin != 0) return null;
    } else {
        begin += 2;
    }
    var end = document.cookie.indexOf(";", begin);
    if (end == -1) {
        end = dc.length;
    }
    return unescape(dc.substring(begin + prefix.length, end));
}

// Cookie setter and font size changer
function swapSize(imgNum) {

    if (imgNum == "1")
    {
      document.body.style.fontSize='100%';
      document.cookie = "fontsize=" + imgNum;
		changeImage(imgNum)
      //alert(document.cookie);
    }

    if (imgNum == "2")
    {
      document.body.style.fontSize='115%';
      document.cookie = "fontsize=" + imgNum;
      changeImage(imgNum)
      //alert(document.cookie);
    }

    if (imgNum == "3")
    {
      document.body.style.fontSize='130%';
      document.cookie = "fontsize=" + imgNum;
		changeImage(imgNum)
      //alert(document.cookie);
   } 
}

// IMAGE SWAPPER FOR THE ICONS
function changeImage(imgNum) {
      
   if (imgNum == "1")
   {
      document['smallImage'].src = "images/chorley/common/adjust_small_selected.gif";
      document['normalImage'].src = "images/chorley/common/adjust_medium_unselected.gif";
      document['largeImage'].src = "images/chorley/common/adjust_large_unselected.gif";
  
      // change size
      document.body.style.fontSize='100%';
      document.cookie = "fontsize=" + imgNum;
      
      //alert(document.cookie);
   }
   
   if (imgNum == "2")
   {
      document['smallImage'].src = "images/chorley/common/adjust_small_unselected.gif";
      document['normalImage'].src = "images/chorley/common/adjust_medium_selected.gif";
      document['largeImage'].src = "images/chorley/common/adjust_large_unselected.gif";
   
	   // change size
      document.body.style.fontSize='115%';
      document.cookie = "fontsize=" + imgNum;
      
      //alert(document.cookie);
   }
   
   if (imgNum == "3")
   {
      document['smallImage'].src = "images/chorley/common/adjust_small_unselected.gif";
      document['normalImage'].src = "images/chorley/common/adjust_medium_unselected.gif";
      document['largeImage'].src = "images/chorley/common/adjust_large_selected.gif";
   
      // change size
      document.body.style.fontSize='130%';
      document.cookie = "fontsize=" + imgNum;
      
      //alert(document.cookie);
   }   
}