function picOn(obj) {
        name = obj.name;
        obj.src = "/assets/img/" + name + "_on.gif";
    }
    
    function picOff(obj) {
        name = obj.name;
        obj.src = "/assets/img/" + name + "_off.gif";
    }
    
    /*====================================================*/

	String.prototype.trim = function () {
		return this.replace(/^\s*/, "").replace(/\s*$/, "");
	}		
	 
	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 {
			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 selectFontsize(fontnaam) {	     
		for(i=0; (a = document.getElementsByTagName("link")[i]); i++) {
            if (a.getAttribute('title') == fontnaam) {
                a.disabled = false;
            } else {
                a.disabled = true;
            }
		}
	
		for (i=0; (obj = document.getElementsByClassName("fontknop")[i]); i++) {
            if (obj.name == fontnaam) {
                obj.src = '/img/' + fontnaam + '_on.gif';
                obj.blur();
            } else {            
                obj.src = '/img/' + obj.name + '_off.gif';
            }
        }		
		
	}