function fotoGr(id) {
			document.getElementById('foto_gr').src = document.getElementById('foto_kl_' + id).src;
			return true;
		}

		function Submitzoeken() {

			if (!document.zoekform["zoeken"].value) {
				document.zoekform["zoeken"].focus();
				return false;
			}

			if (true) {
			document.zoekform.submit();
			}
		}


		function Swap(boxid) { // Details van het Pand
		

				if (document.getElementById(boxid).style.display == 'inline') {
						document.getElementById(boxid).style.display = 'none';
				} else {
					document.getElementById(boxid).style.display = 'inline';
				}

		}

		function swapboxes(box1,box2) {

			if (document.getElementById(box1).style.display == 'none') {
					document.getElementById(box1).style.display = 'inline';
					document.getElementById(box2).style.display = 'none';
			} else {
					document.getElementById(box1).style.display = 'none';
					document.getElementById(box2).style.display = 'inline';
			}
		}


		function presubmit_reageer() {

			if(!document.frm_pand_reageer['naam'].value) {
				alert("Vergeet niet een naam in te vullen!");
				document.frm_pand_reageer['naam'].focus();
				return false;
			}

			if(!document.frm_pand_reageer['telefoon'].value) {
				alert("Vergeet niet het telefoonnumer in te vullen!");
				document.frm_pand_reageer['telefoon'].focus();
				return false;
			}
			if(!document.frm_pand_reageer['emailadres'].value) {
				alert("Vergeet niet een e-mailadres in te vullen!");
				document.frm_pand_reageer['emailadres'].focus();
				return false;
			}
			var regx  = /^([a-zA-Z0-9_\.\-])+\@(([a-zA-Z0-9\-])+\.)+([a-zA-Z0-9]{2,4})+$/;
			if (! regx(document.frm_pand_reageer['emailadres'].value) ) {
				alert("Het ingevulde e-mailadres is ongeldig, probeer het nog eens!");
				document.frm_pand_reageer['emailadres'].focus();
				return false; 	  
			}			
			return mail('frm_pand_reageer');
		}
		
		function correctPNG() // correctly handle PNG transparency in Win IE 5.5 & 6.
		{
		   var arVersion = navigator.appVersion.split("MSIE")
		   var version = parseFloat(arVersion[1])
		   if ((version >= 5.5) && (document.body.filters)) 
		   {
		      for(var i=0; i<document.images.length; i++)
		      {
		         var img = document.images[i]
		         var imgName = img.src.toUpperCase()
		         if (imgName.substring(imgName.length-3, imgName.length) == "PNG")
		         {
		            var imgID = (img.id) ? "id='" + img.id + "' " : ""
		            var imgClass = (img.className) ? "class='" + img.className + "' " : ""
		            var imgTitle = (img.title) ? "title='" + img.title + "' " : "title='" + img.alt + "' "
		            var imgStyle = "display:inline-block;" + img.style.cssText 
		            if (img.align == "left") imgStyle = "float:left;" + imgStyle
		            if (img.align == "right") imgStyle = "float:right;" + imgStyle
		            if (img.parentElement.href) imgStyle = "cursor:hand;" + imgStyle
		            var strNewHTML = "<span " + imgID + imgClass + imgTitle
		            + " style=\"" + "width:" + img.width + "px; height:" + img.height + "px;" + imgStyle + ";"
		            + "filter:progid:DXImageTransform.Microsoft.AlphaImageLoader"
		            + "(src=\'" + img.src + "\', sizingMethod='scale');\"></span>" 
		            img.outerHTML = strNewHTML
		            i = i-1
		         }
		      }
		   }    
		}