function DoAjax(field, url, params, method) {
		var http = false;
		if (window.XMLHttpRequest)
			http = new XMLHttpRequest();
		else if (window.ActiveXObject)
			http = new ActiveXObject("Microsoft.XMLHTTP");  
		
		if (!method || method.toLowerCase() == 'get') {
			var method = 'GET';
			url += '?' + params;
		}
		
		if (!params)
			params = '';
		
		http.open(method, url);
		http.setRequestHeader("Content-type", "application/x-www-form-urlencoded");
		http.setRequestHeader("Content-length", params.length);
		http.setRequestHeader("Connection", "close");
		
		window.status = 'Bezig...';
		
		http.onreadystatechange = function() {
			if(http.readyState == 4 && http.status == 200) {
				window.status = 'Opgeslagen...';
				document.getElementById(field).innerHTML = http.responseText;
			} 
			else {
				window.status = 'Foutje...';
			}
		}
		
		http.send(decodeURI(params));
	}
	
	function MakeWindow(url, w, h, scroll, windowname) {
		var windowprops = "height=" + h + ",width=" + w + ",left=50,top=50,status=no,location=no,scrollbars=" + scroll + ",menubars=no,toolbars=auto,resizable=yes";
		window.open(url,windowname,windowprops);
	}
	
	function GoToUrl(url, value) {
		url = url + value;
		document.location.href = url;
	}
	
	function AskConfirm(field, ip) {
		if (document.login.logip.checked == true && !confirm("Vergrendel deze login-sessie aan mijn ip adres / "+ip+"\nHiermee leg je je login-sessie vast aan je ip adres, gebruik dit alleen als je er zeker van bent dat je een vast ip adres hebt.")) {
			document.login.logip.checked = false;
		}
	}
	
	var klik = 0;
	function klikken(msg) {
		if(klik > 0) { 
			alert(msg);
			return false; 
		} 
		else { 
			klik++ 
			return true; 
		}
	}
	
	function CheckFormInput(FormName) {
		var msg = '';
		
		for (i=0;i<FormName.elements.length;i ++) {
			if (FormName.elements[i].id != '' && FormName.elements[i].value.length == '')
				msg += 'Het veld ' + FormName.elements[i].id + ' is niet ingevuld.\n';
		}
		
		if (msg) {
			alert(msg);
			return false;
		}
	}
	
	function FormatPrice(input) {
		input = String(input).replace(/[^0-9,\.]/g,"");
		var centen = String(input).match(/[,\.][0-9]{1,2}$/);
		var euro = String(input).replace(centen, "");
		
		euro = String(euro).replace(/[,\.]/g,"");
		centen = String(centen).replace(/[,\.]/g,"");
		
		var output = "";
		for(var i=0; i<euro.length; i++) {
			output += euro.substr(i,1);
			if((euro.length-1-i)%3 == 0 && i != euro.length-1) output += ".";
		}
		
		if(!parseInt(output)) output = "1";
		if(parseInt(centen)) {
		while(String(centen).length < 2) centen += "0";
			output += "," + centen;
		}
		else {
			output += ",00";
		}
		
		return output;
	}
	
	function CancelButton(msg, url) {
		if (confirm(msg)) {
			if (url) {
				location.href=url;
			}
			else {
				history.back(-1);
			}
		}
	}
	
	function DoMail() {
		var h = document.domain;
		var exp = h.split(".");
		var xx = 'mailt';
		xx += 'o:Inf';
		xx += 'o@'+exp[1]+'.'+exp[2];
		location.href=xx;
	}
	
	var isMinNS4 = (navigator.appName.indexOf("Netscape") >= 0 && parseFloat(navigator.appVersion) >= 4) ? 1 : 0;
	var isMinNS6 = (isMinNS4 && navigator.userAgent.indexOf("Gecko")>=0) ? 1 : 0;
	var isMinIE4 = (document.all) ? 1 : 0;
	var isMinIE5 = (isMinIE4 && navigator.appVersion.indexOf("5.")) >= 0 ? 1 : 0;
	var isDOM = (document.getElementById) ? 1 : 0;
	
	function GetBrowser(name) {
		if (isDOM)
			return document.getElementById(name);
		if (isMinNS4)
			return findLayer(name, document);
		if (isMinIE4)
			return eval('document.all.' + name);
		
		return null;
	}
	
	function ShowMore(name) {
		var name = GetBrowser(name);
		
		if (name.style.display == 'none')
			name.style.display = '';
		else
			name.style.display = 'none';
	}
	
	// deze functie in gebruik?
	function ShowMoreCompany(name) {
		var name = GetBrowser(name);
		
		if (name.style.display == 'none')
			name.style.display = '';
		else
			name.style.display = 'none';
	}
	
	function createRequestObject() {
		var req;
		
		if(window.XMLHttpRequest){
			req = new XMLHttpRequest();
		} else if(window.ActiveXObject) {
			req = new ActiveXObject("Microsoft.XMLHTTP");
		} else {
			//alert('Problem creating the XMLHttpRequest object');
		}
		
		return req;
	}
	
	function sendRequestContent(filename, value) {
		var http = createRequestObject();
		
		ShowMore2('field_' + value);
		
		http.open('GET', filename + value);
		http.onreadystatechange = 	function() {
										if(http.readyState == 4 && http.status == 200) {
											if(http.responseText)
												document.getElementById("content_" + value).innerHTML = http.responseText;
											else
												document.getElementById("content_" + value).innerHTML = "&nbsp;";
										}
										else {
											document.getElementById("content_" + value).innerHTML = "&nbsp;";
										}
									};
		http.send(null);
	}
	
	function MakeSearchValue(file, formname, field, num, val) {
		document.forms[formname].elements[field].value = val;
		sendRequestSearch(file, val, num);
	}
	
	function highlight(field) {
		field.focus();
		field.select();
	}