// JavaScript Document
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 setCookieFromURL(cookieName){
    GET_DATA=new Array();
    var getDataString=new String(window.location);
    var questionMarkLocation=getDataString.search(/\?/);
    if (questionMarkLocation!=-1){
      getDataString=getDataString.substr(questionMarkLocation+1);
      var getDataArray=getDataString.split(/&/g);
      for (var i=0;i<getDataArray.length;i++){
        var nameValuePair=getDataArray[i].split(/=/);
        GET_DATA[unescape(nameValuePair[0])]=unescape(nameValuePair[1]);
        var theElementName = unescape(nameValuePair[0]);
        var theElementValue = unescape(nameValuePair[1]);
        //alert(theElementValue);
		if (theElementName == cookieName){
			createCookie(cookieName,theElementValue,30)
		}
      }
    }
  }
function appendContributeTo(theForm){
	var contributeToVal = readCookie("contributeTo");
	var currentDesc = theForm.item_name.value;
	if(contributeToVal != null){
		theForm.item_name.value = currentDesc + " with 20% of the item price to be contributed to " + contributeToVal;
	}
}