function addClass(target, classValue){
	var pattern = new RegExp("(^| )" + classValue + "( |$)");
	if(!pattern.test(target.className)){
		if(target.className == ""){
		target.className = classValue;
		}else{
		target.className += " " + classValue;
		}
	}
	return true;
} // end addClass

function removeClass(target, classValue){
	var removedClass = target.className;
	var pattern = new RegExp("(^| )" + classValue + "( |$)");
	
	// Insert a check that this class is actually listed otherwise IE7 falls over.
	if(pattern.test(removedClass)){
		removedClass = removedClass.replace(pattern, "$1");
		removedClass = removedClass.replace(/ $/, "");
		target.className = removedClass;
	}
	
	return true;
} // end removeClass

function findPos(obj) {
/// http://www.quirksmode.org/js/findpos.html
	var curleft = curtop = 0;
	if (obj.offsetParent){
		do {
			curleft += obj.offsetLeft;
			curtop += obj.offsetTop;
		} while (obj = obj.offsetParent);
	
		return [curleft,curtop];
	}
}

function setCookie(c_name,value,expiredays)
{
var exdate=new Date();
exdate.setDate(exdate.getDate()+expiredays);
document.cookie=c_name+ "=" +escape(value)+
((expiredays==null) ? "" : ";expires="+exdate.toGMTString());
}

function getCookie(c_name)
{
if (document.cookie.length>0)
  {
  c_start=document.cookie.indexOf(c_name + "=");
  if (c_start!=-1)
    {
    c_start=c_start + c_name.length+1;
    c_end=document.cookie.indexOf(";",c_start);
    if (c_end==-1) c_end=document.cookie.length;
    return unescape(document.cookie.substring(c_start,c_end));
    }
  }
return "";
}