function image_popup(link, sx, sy)
	{
		window.open('http://www.woodstock.nl/pic.php?pic=' + link,'Photo','scrollbars=auto,width='+sx+',height='+sy);
	}

	function updateprice(objInput)
	{
		if (module != 7)
		{
			//vervangen van komma's door punten
			var m2 = correctprice(objInput.value);
			objInput.value = m2;
			document.getElementById("VLOEROPPERVLAKTE").value = m2;
			// checken of de waarde wel een nummer is of leeg is\
			if(m2=="" | isNaN(m2))
			{
				//gedrag bij geen of foute invoer
				document.getElementById("berekening_vloeropp").innerHTML = "-";
				document.getElementById("berekening_benodigd").innerHTML = "-";
				document.getElementById("berekening_pakken").innerHTML = "- "+verpakkingstypemv;
				document.getElementById("aantal_pakken").innerHTML = "- "+verpakkingstypemv;
				document.getElementById("berekening_teontvangen_m2").innerHTML = "-";
				document.getElementById("berekening_teontvangen_m2_2").innerHTML = "-";
				document.getElementById("berekening_teontvangen_m2_3").innerHTML = "-";			
				document.getElementById("prijs_winkel").innerHTML = "€ -";
				document.getElementById("prijs_voordeel").innerHTML = "€ -";
				document.getElementById("prijs_internet").innerHTML = "€ -";
			}else
			{
				//gedrag bij correcte invoer
				var aantalPakken = Math.ceil((m2*(1+snijverlies))/m2perPak);
				var aantalm2 = m2perPak*aantalPakken;
				var strPakken = "";
				if(aantalPakken==1){strPakken=verpakkingstype}
				else {strPakken=verpakkingstypemv}
				document.getElementById("berekening_vloeropp").innerHTML = formatNumber(m2);
				document.getElementById("berekening_benodigd").innerHTML = formatNumber(m2*(1+snijverlies));
				document.getElementById("berekening_pakken").innerHTML = aantalPakken+" "+strPakken;
				document.getElementById("aantal_pakken").innerHTML = aantalPakken+" "+strPakken;
				document.getElementById("berekening_teontvangen_m2").innerHTML = formatNumber(aantalm2);
				document.getElementById("berekening_teontvangen_m2_2").innerHTML = formatNumber(aantalm2);
				document.getElementById("berekening_teontvangen_m2_3").innerHTML = formatNumber(aantalm2);			
				document.getElementById("prijs_winkel").innerHTML = "€ "+ formatNumber(winkelPrijsPerm2*aantalm2);
				document.getElementById("prijs_voordeel").innerHTML = "€ "+ formatNumber((winkelPrijsPerm2-internetPrijsPerm2)*aantalm2);
				document.getElementById("prijs_internet").innerHTML = "€ "+ formatNumber(internetPrijsPerm2*aantalm2);
				document.getElementById("VLOEROPPERVLAKTE").value = aantalm2; 
			}
			document.getElementById("label1_prijs").innerHTML = formatNumber(winkelPrijsPerm2);
			document.getElementById("label2_prijs").innerHTML = formatNumber(internetPrijsPerm2);
			document.getElementById("label_m2pak").innerHTML = m2perPak;
			document.getElementById("label_m2pak2").innerHTML = m2perPak;
		}else
		{
			if (document.getElementById("glas_width"))
			{var width = correctprice(document.getElementById("glas_width").value)}else
			{var width = 0}
			if (document.getElementById("glas_length"))
			{var length = correctprice(document.getElementById("glas_length").value)}else
			{var length = 0}
			if (document.getElementById("glas_buitenblad"))
			{var buitenblad = correctprice(document.getElementById("glas_buitenblad").value)}else
			{var buitenblad = 0}
			if (objInput.value)
			{
				var m2 = correctprice(objInput.value);
				objInput.value = m2;
				document.getElementById("VLOEROPPERVLAKTE").value = m2;
			}
			if (document.getElementById("VLOEROPPERVLAKTE"))
			{var amount = correctprice(document.getElementById("VLOEROPPERVLAKTE").value)}else
			{var amount = 0}
			var surface = 0;
			var surface2 = 0;
			var norm_price = 0;
			var surface2_var = 0;
			surface = width*length*amount;
			surface2 = surface/1000000;
			document.getElementById("normal_price").innerHTML = formatNumber(winkelPrijsPerm2);
			document.getElementById("our_price").innerHTML = formatNumber(internetPrijsPerm2);
			if (surface2 < 0.5)
			{
				surface2_var = 0.5;
			}else
			{
				surface2_var = surface2;
			}
			norm_price = winkelPrijsPerm2 * surface2_var * buitenblad;
			wood_price = internetPrijsPerm2 * surface2_var * buitenblad;
			saving = formatNumber(norm_price - wood_price);
			if (surface == 0)
			{
				document.getElementById("glas_width2").innerHTML = "-";
				document.getElementById("glas_length2").innerHTML = "-";
				document.getElementById("amount2").innerHTML = "-";
				document.getElementById("surface").innerHTML = "-";
				document.getElementById("surface4").value = "";
				document.getElementById("price").value = "";
				document.getElementById("normal_price2").innerHTML = "-";
				document.getElementById("internet_price").innerHTML = "-";
				document.getElementById("prijs_voordeel").innerHTML = "-";
			}else
			{
				document.getElementById("glas_width2").innerHTML = width;
				document.getElementById("glas_length2").innerHTML = length;
				document.getElementById("amount2").innerHTML = amount;
				document.getElementById("surface").innerHTML = formatNumber(surface2);
				document.getElementById("surface4").value = surface2;
				document.getElementById("price").value = formatNumber(wood_price);
				document.getElementById("normal_price2").innerHTML = formatNumber(norm_price);
				document.getElementById("internet_price").innerHTML = formatNumber(wood_price);
				document.getElementById("prijs_voordeel").innerHTML = saving;
			}
		}
	}

	function popUp(URL)
	{
		day = new Date();
		id = day.getTime();
		eval("page" + id + " = window.open(URL, '" + id + "', 'toolbar=0,scrollbars=0,location=0,statusbar=0,menubar=0,resizable=1,width=430,height=294');");
	}