// JavaScript Document
/* fontsize vergroten/verkleinen */
function setFontSize(size) {
	if(!size)
		size = findFontSize();
	if(document.getElementById('main')) {
		if(size == '12px') {
			document.getElementById('main').style.fontSize = size;
			document.getElementById('main').style.lineHeight = '15px';
		} else if(size == '15px') {
			document.getElementById('main').style.fontSize = size;
			document.getElementById('main').style.lineHeight = '19px';
		} else if(size == '18px') {
			document.getElementById('main').style.fontSize = size;
			document.getElementById('main').style.lineHeight = '25px';
		}
	}
	
	if(document.getElementById('left')) {
		if(size == '12px') {
			document.getElementById('left').style.fontSize = size;
			document.getElementById('left').style.lineHeight = '15px';
		} else if(size == '15px') {
			document.getElementById('left').style.fontSize = size;
			document.getElementById('left').style.lineHeight = '19px';
		} else if(size == '18px') {
			document.getElementById('left').style.fontSize = size;
			document.getElementById('left').style.lineHeight = '25px';
		}
	}
	document.cookie = "fontSize="+size+"; path=/"; 
}
function findFontSize() {
	value	= getCookie("fontSize=");
	if(value == null)
	    return "12px"; 
	else
		return value;
}

/* cookie waardes ophalen */
function getCookie(nameEQ) {
    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;
}

/* history back */
function historyBack() {
	history.back();
}

/* clear default input*/
function clearDefault(el) {
if (el.defaultValue==el.value) el.value = ""
}