function validateEditWallpaper(){
	var comments = document.modify_wallpaper.description.value;	
	if (comments == ''){
		alert('Please give a comment.');
		document.modify_wallpaper.description.focus();
		return false;	
	}
	var rad1 = document.modify_wallpaper.image_choice1[1].checked;
	var rad2 = document.modify_wallpaper.image_choice1[2].checked;
	var rad3 = document.modify_wallpaper.image_choice1[0].checked;
	if (rad1 == '' && rad2 == '' && rad3 == ''){
		alert('Please select an option for the image.');
		return false;
	}
	else if (rad1){
		var existing_image = document.modify_wallpaper.existing_image1.value;
		if (existing_image == ''){
			alert('Please select an image.');
			document.modify_wallpaper.existing_image1.focus();
			return false;
			exit;	
		}
	}
	else if (rad2){
		var new_image = document.modify_wallpaper.new_image1.value;
		if (new_image == ''){
			alert('Please browse an image.');	
			document.modify_wallpaper.new_image1.focus();
			return false;
			exit;
		}
	}
	var rad1 = document.modify_wallpaper.image_choice2[1].checked;
	var rad2 = document.modify_wallpaper.image_choice2[2].checked;
	var rad3 = document.modify_wallpaper.image_choice2[0].checked;
	if (rad1 == '' && rad2 == '' && rad3 == ''){
		alert('Please select an option for the Wallpaper of the resolution 640x480.');
		return false;
	}
	else if (rad1){
		var existing_image = document.modify_wallpaper.existing_image2.value;
		if (existing_image == ''){
			alert('Please select a Wallpaper for the resolution 640x480.');
			document.modify_wallpaper.existing_image2.focus();
			return false;
			exit;	
		}
	}
	else if (rad2){
		var new_image = document.modify_wallpaper.new_image2.value;
		if (new_image == ''){
			alert('Please browse a Wallpaper for the resolution 640x480.');	
			document.modify_wallpaper.new_image2.focus();
			return false;
			exit;
		}
	}
	var rad1 = document.modify_wallpaper.image_choice3[1].checked;
	var rad2 = document.modify_wallpaper.image_choice3[2].checked;
	var rad3 = document.modify_wallpaper.image_choice3[0].checked;
	if (rad1 == '' && rad2 == '' && rad3 == ''){
		alert('Please select an option for the Wallpaper of the resolution 640x480.');
		return false;
	}
	else if (rad1){
		var existing_image = document.modify_wallpaper.existing_image3.value;
		if (existing_image == ''){
			alert('Please select a Wallpaper for the resolution 640x480.');
			document.modify_wallpaper.existing_image3.focus();
			return false;
			exit;	
		}
	}
	else if (rad2){
		var new_image = document.modify_wallpaper.new_image3.value;
		if (new_image == ''){
			alert('Please browse a Wallpaper for the resolution 640x480.');	
			document.modify_wallpaper.new_image3.focus();
			return false;
			exit;
		}
	}
	var rad1 = document.modify_wallpaper.image_choice4[1].checked;
	var rad2 = document.modify_wallpaper.image_choice4[2].checked;
	var rad3 = document.modify_wallpaper.image_choice4[0].checked;
	if (rad1 == '' && rad2 == '' && rad3 == ''){
		alert('Please select an option for the Wallpaper of the resolution 640x480.');
		return false;
	}
	else if (rad1){
		var existing_image = document.modify_wallpaper.existing_image4.value;
		if (existing_image == ''){
			alert('Please select a Wallpaper for the resolution 640x480.');
			document.modify_wallpaper.existing_image4.focus();
			return false;
			exit;	
		}
	}
	else if (rad2){
		var new_image = document.modify_wallpaper.new_image4.value;
		if (new_image == ''){
			alert('Please browse a Wallpaper for the resolution 640x480.');	
			document.modify_wallpaper.new_image4.focus();
			return false;
			exit;
		}
	}
	return true;
}

function validateEditScreensaver(){
	var comments = document.modify_screensaver.description.value;	
	if (comments == ''){
		alert('Please give a Description.');
		document.modify_screensaver.description.focus();
		return false;	
	}
	var rad1 = document.modify_screensaver.image_choice[1].checked;
	var rad2 = document.modify_screensaver.image_choice[2].checked;
	var rad3 = document.modify_screensaver.image_choice[0].checked;
	if (rad1 == '' && rad2 == '' && rad3 == ''){
		alert('Please select an option for the Screensaver.');
		return false;
	}
	else if (rad1){
		var existing_image = document.modify_screensaver.existing_image.value;
		if (existing_image == ''){
			alert('Please select a Screensaver.');
			document.modify_screensaver.existing_image.focus();
			return false;
			exit;	
		}
	}
	else if (rad2){
		var new_image = document.modify_screensaver.new_image.value;
		if (new_image == ''){
			alert('Please browse a Screensaver.');	
			document.modify_screensaver.new_image.focus();
			return false;
			exit;
		}
	}
	return true;
}
	
function validateAddWallpaper(){
	var comments = document.add_wallpaper.description.value;
		
	var rad1 = document.add_wallpaper.image_choice1[0].checked;
	var rad2 = document.add_wallpaper.image_choice1[1].checked;
	
	if (comments == ''){
		alert('Please insert your comments.');
		document.add_wallpaper.description.focus();
		return false;	
	}
	
	var rad1 = document.add_wallpaper.image_choice1[0].checked;
	var rad2 = document.add_wallpaper.image_choice1[1].checked;
	if (rad1 == '' && rad2 == ''){
		alert('Please select an option for the Wallpaper');
		return false;	
	}
	if (rad1){
		var existing_image = document.add_wallpaper.existing_image1.value;
		if (existing_image == ''){
			alert('Please select an Image for the wallpaper.');
			document.add_wallpaper.existing_image1.focus();
			return false;
			exit;	
		}
	}
	if (rad2){
		var new_image = document.add_wallpaper.new_image1.value;
		if (new_image == ''){
			alert('Please browse an Image.');	
			document.add_wallpaper.new_image1.focus();
			return false;
			exit;
		}
	}
	var rad1 = document.add_wallpaper.image_choice2[0].checked;
	var rad2 = document.add_wallpaper.image_choice2[1].checked;
	if (rad1 == '' && rad2 == ''){
		alert('Please select an option for the Wallpaper of the resolution 640x480');
		return false;	
	}
	if (rad1){
		var existing_image = document.add_wallpaper.existing_image2.value;
		if (existing_image == ''){
			alert('Please select a Wallpaper for the resolution 640x480.');
			document.add_wallpaper.existing_image2.focus();
			return false;
			exit;	
		}
	}
	if (rad2){
		var new_image = document.add_wallpaper.new_image2.value;
		if (new_image == ''){
			alert('Please browse a Wallpaper for the resolution 640x480.');	
			document.add_wallpaper.new_image2.focus();
			return false;
			exit;
		}
	}
	var rad1 = document.add_wallpaper.image_choice3[0].checked;
	var rad2 = document.add_wallpaper.image_choice3[1].checked;
	if (rad1 == '' && rad2 == ''){
		alert('Please select an option for the Wallpaper of the resolution 800x600');
		return false;	
	}
	if (rad1){
		var existing_image = document.add_wallpaper.existing_image3.value;
		if (existing_image == ''){
			alert('Please select a Wallpaper for the resolution 800x600.');
			document.add_wallpaper.existing_image3.focus();
			return false;
			exit;	
		}
	}
	if (rad2){
		var new_image = document.add_wallpaper.new_image3.value;
		if (new_image == ''){
			alert('Please browse a Wallpaper for the resolution 800x600.');	
			document.add_wallpaper.new_image3.focus();
			return false;
			exit;
		}
	}

	var rad1 = document.add_wallpaper.image_choice4[0].checked;
	var rad2 = document.add_wallpaper.image_choice4[1].checked;
	if (rad1 == '' && rad2 == ''){
		alert('Please select an option for the Wallpaper of the resolution 1024x768');
		return false;	
	}
	if (rad1){
		var existing_image = document.add_wallpaper.existing_image4.value;
		if (existing_image == ''){
			alert('Please select a Wallpaper for the resolution 1024x768.');
			document.add_wallpaper.existing_image4.focus();
			return false;
			exit;	
		}
	}
	if (rad2){
		var new_image = document.add_wallpaper.new_image4.value;
			if (new_image == ''){
			alert('Please browse a Wallpaper for the resolution 1024x768.');	
			document.add_wallpaper.new_image4.focus();
			return false;
			exit;
		}
	}
	return true;
}
	
function validateAddScreensaver(){
	var comments = document.add_screensaver.description.value;
	if (comments == ''){
		alert('Please insert your Description.');
		document.add_screensaver.description.focus();
		return false;	
	}
	
	var rad1 = document.add_screensaver.image_choice[0].checked;
	var rad2 = document.add_screensaver.image_choice[1].checked;
	if (rad1 == '' && rad2 == ''){
		alert('Please select an option for the Screensaver');
		return false;	
	}
	if (rad1){
		var existing_image = document.add_screensaver.existing_image.value;
		if (existing_image == ''){
			alert('Please select a Screensaver.');
			document.add_screensaver.existing_image.focus();
			return false;
			exit;	
		}
	}
	if (rad2){
		var new_image = document.add_screensaver.new_image.value;
		if (new_image == ''){
			alert('Please browse a Screensaver.');	
			document.add_screensaver.new_image.focus();
			return false;
			exit;
		}
	}
	return true;
}
	
function previewWall(path,folder){
	window.open('/common/view_wallpaper.php?entry=' + path + '&folder=' + folder, 'view_image', 'width=350,height=350,status=0,toolbar=0,scrollbars=1,history=0,left=100,top=100');
	return false;
}