function checkBlogInsert () {
	var oForm = document.getElementById("writeBlogContent");
	var iFormLength = (oForm.elements.length-1);
	var bError = false;
	var oWarning = document.getElementById("warning");
	var sPostParams = "";
	
	for (i=0; i<iFormLength; i++) {
		if (oForm.elements[i].value != "" || oForm.elements[i].name == "blogPicture") {
			if (i==0) {
				sPostParams = oForm.elements[i].name+"="+oForm.elements[i].value;
			} else {
				sPostParams += "&"+ oForm.elements[i].name+"="+oForm.elements[i].value;
			}
		} else {
			bError = true;
			oWarning.innerHTML = oForm.elements[i].name+" is niet ingevuld.";
		}
	}
	if (!bError) {
		document.writeBlogContent.submit();
	}
}
function checkDownloadForm () {
	var oForm = document.getElementById("insertDownloadForm");
	var iFormLength = (oForm.elements.length-1);
	var bError = false;
	var oWarning = document.getElementById("warning");
	var sPostParams = "";
	
	for (i=0; i<iFormLength; i++) {
		if (oForm.elements[i].value != "") {
			if (i==0) {
				sPostParams = oForm.elements[i].name+"="+oForm.elements[i].value;
			} else {
				sPostParams += "&"+ oForm.elements[i].name+"="+oForm.elements[i].value;
			}
		} else {
			bError = true;
			oWarning.innerHTML = oForm.elements[i].name+" is niet ingevuld.";
		}
	}
	if (!bError) {
		document.insertDownloadForm.submit();
	}
}