function validate(element) {
	switch (element) {
		case "name":
			if(document.getElementById('name').value == "") {
				changeElem('nameVal',0);
			}else {
				changeElem('nameVal',1);
			}
			break;
		case "email":
			var email = document.getElementById('email').value;
			var At = email.indexOf("@")
			var Stop = email.lastIndexOf(".")
			if (At == -1 || Stop == -1) {
				changeElem('emailVal',0);
			}
			else if (Stop < At) {
				changeElem('emailVal',0);
			}
			else if (Stop - At == 1) {
				changeElem('emailVal',0);
			}
			else {
				changeElem('emailVal',1);
			}
			break;
		case "title":
			var tutTitle = document.submitForm.title.value;
			if(tutTitle.length <= 5) {
				changeElem('titleVal',0);
			} else {
				changeElem('titleVal',1);
			}
			break;
		case "link":
			var tutLink = document.submitForm.link.value;
			if((tutLink.length <= 8)) {
				changeElem('linkVal',0);
			} else {
				changeElem('linkVal',1);
			}
			break;
		case "image":
			var tutImage = document.submitForm.image.value;
			if((tutImage.length <= 4) || (document.submitForm.image.value.lastIndexOf('.jpg')==-1 && document.submitForm.image.value.lastIndexOf('.gif')==-1 && document.submitForm.image.value.lastIndexOf('.png')==-1)) {
				changeElem('imageVal',0);
			} else {
				changeElem('imageVal',1);
			}
			break;
		case "desc":
			var tutDesc = document.submitForm.desc.value;
			if((tutDesc.length <= 35)) {
				changeElem('descVal',0);
			} else {
				changeElem('descVal',1);
			}
			break;
		case "category":
			if(document.submitForm.category.value == 0) {
				changeElem('catVal',0);
			} else {
				changeElem('catVal',1);
			}
			break;
		default:
			validate("name");
			validate("email");
			validate("title");
			validate("category");
			validate("link");
			validate("image");
			validate("desc");
	}
	
}

function changeElem(element,state) {
	if(state==0) {
		document.getElementById(element).className = "submitValInv";
		document.submitForm.submitBtn.disabled = true;
		document.getElementById(element).innerHTML = "CHECK INPUT";
	} else {
		document.getElementById(element).className = "submitValVal";
		document.submitForm.submitBtn.disabled = false;
		document.getElementById(element).innerHTML = "VALID";
	}
}