function check(field, extensions, requireUpload) {
	var fileName = field.value.replace(/"/gi,'');
	field.uploadOK = false;
	if (fileName == '') {
		if (requireUpload) {
			alert('File is required!');
			field.focus();
			return;
		} else {
			field.uploadOK = true;
		}
	} else {
		if ('GIF,JPG,JPEG,BMP' != '') {
			checkFileExtension(field, fileName, 'GIF,JPG,JPEG,BMP');
		} else {
			field.uploadOK = true;
		}
		if (!document.layers && field.uploadOK) {  
			document.PU_uploadForm = field.form;
			re = new RegExp("\.(gif|jpg|bmp|jpeg)$","i");
			if(re.test(fileName) && (sizeLimit != '' || minWidth != '' || minHeight != '' || maxWidth != '' || maxHeight != '' || saveWidth != '' || saveHeight != '')) {
				checkImageDimensions(field,sizeLimit,minWidth,minHeight,maxWidth,maxHeight,saveWidth,saveHeight);
			}
		}
	}
	return;
}


function checkFileExtension(field, fileName, extensions) {
	var re = new RegExp("\\.(" + extensions.replace(/,/gi,"|").replace(/\s/gi,"") + ")$","i");
	var agt = navigator.userAgent.toLowerCase();
	var is_mac = (agt.indexOf("mac") != -1);
	var is_op = (agt.indexOf("opera") != -1);
	if (is_op) {
		var ext = fileName.substring(fileName.lastIndexOf('.')+1, fileName.length);
		var extArr = extensions.split(',');
		var extCheck = false;
		
		for (var i = 0; i < extArr.length; i++) {
			if (extArr[i].toLowerCase() == ext.toLowerCase()) {
				extCheck = true;
				break;
			}
		}
		if (extCheck == false) {
			alert('U kunt alleen de volgende extensies uploaden: ' + extensions + '.');
			field.focus();
			field.uploadOK = false;
			return;
		}
	} else {
		if (!re.test(fileName)) {
			alert('U kunt alleen de volgende extensies uploaden:  ' + extensions + '.');
			field.focus();
			field.uploadOK = false;
			return;
		}
	}
	field.uploadOK = true;
}

function UpdateMessage(){
  document.getElementById('UPDATEMSG').style.display='block'    
  document.getElementById('VIEW').style.display='none'    
}



PositionX = 100;
PositionY = 100;

defaultWidth  = 500;
defaultHeight = 500;


var AutoClose = true;







function popImage(imageURL,imageTitle){
	var imgWin = window.open('','_blank','scrollbars=no,resizable=1,width='+defaultWidth+',height='+defaultHeight+',left='+PositionX+',top='+PositionY);
	if( !imgWin ) { return true; } //popup blockers should not cause errors
	imgWin.document.write('<html><head><title>'+imageTitle+'<\/title><script type="text\/javascript">\n'+
		'function resizeWinTo() {\n'+
		'if( !document.images.length ) { document.images[0] = document.layers[0].images[0]; }'+
		'var oH = document.images[0].height, oW = document.images[0].width;\n'+
		'if( !oH || window.doneAlready ) { return; }\n'+ //in case images are disabled
		'window.doneAlready = true;\n'+ //for Safari and Opera
		'var x = window; x.resizeTo( oW + 200, oH + 200 );\n'+
		'var myW = 0, myH = 0, d = x.document.documentElement, b = x.document.body;\n'+
		'if( x.innerWidth ) { myW = x.innerWidth; myH = x.innerHeight; }\n'+
		'else if( d && d.clientWidth ) { myW = d.clientWidth; myH = d.clientHeight; }\n'+
		'else if( b && b.clientWidth ) { myW = b.clientWidth; myH = b.clientHeight; }\n'+
		'if( window.opera && !document.childNodes ) { myW += 16; }\n'+
		'x.resizeTo( oW = oW + ( ( oW + 200 ) - myW ), oH = oH + ( (oH + 200 ) - myH ) );\n'+
		'var scW = screen.availWidth ? screen.availWidth : screen.width;\n'+
		'var scH = screen.availHeight ? screen.availHeight : screen.height;\n'+
		'if( !window.opera ) { x.moveTo(Math.round((scW-oW)/2),Math.round((scH-oH)/2)); }\n'+
		'}\n'+
		'<\/script>'+
		'<\/head><body onload="resizeWinTo();"'+(AutoClose?' onblur="self.close();"':'')+'>'+
		(document.layers?('<layer left="0" top="0">'):('<div style="position:absolute;left:0px;top:0px;display:table;">'))+
		'<img src="'+imageURL+'" alt="Loading image ..." title="" onload="resizeWinTo();">'+
		(document.layers?'<\/layer>':'<\/div>')+'<\/body><\/html>');
	imgWin.document.close();
	if( imgWin.focus ) { imgWin.focus(); }
	return false;
}



function toggle(id){
ul = "ul_" + id;
img = "img_" + id;
ulElement = document.getElementById(ul);
imgElement = document.getElementById(img);
if (ulElement){
      if (ulElement.className == 'closed'){
		ulElement.className = "open";
        imgElement.src = "Site/images/opened.gif";
         }else{
        ulElement.className = "closed";
        imgElement.src = "Site/images/closed.gif";
      }
   }
}

window.onerror = function(){ return true; } 