function type_web() {
	document.sform.type.value = 'web';
	document.getElementById('web_tab').className = "web_active";
	document.getElementById('images_tab').className = "images";
	document.getElementById('news_tab').className = "news";
	document.getElementById('video_tab').className = "video";
	document.getElementById('shopping_tab').className = "shopping";
};
function type_images() {
	document.sform.type.value = 'images';
	document.getElementById('web_tab').className = "web";
	document.getElementById('images_tab').className = "images_active";
	document.getElementById('news_tab').className = "news";
	document.getElementById('video_tab').className = "video";
	document.getElementById('shopping_tab').className = "shopping";
};
function type_news() {
	document.sform.type.value = 'news';
	document.getElementById('web_tab').className = "web";
	document.getElementById('images_tab').className = "images";
	document.getElementById('news_tab').className = "news_active";
	document.getElementById('video_tab').className = "video";
	document.getElementById('shopping_tab').className = "shopping";
};
function type_video() {
	document.sform.type.value = 'video';
	document.getElementById('web_tab').className = "web";
	document.getElementById('images_tab').className = "images";
	document.getElementById('news_tab').className = "news";
	document.getElementById('video_tab').className = "video_active";
	document.getElementById('shopping_tab').className = "shopping";
};
function type_shopping() {
	document.sform.type.value = 'shopping';
	document.getElementById('web_tab').className = "web";
	document.getElementById('images_tab').className = "images";
	document.getElementById('news_tab').className = "news";
	document.getElementById('video_tab').className = "video";
	document.getElementById('shopping_tab').className = "shopping_active";	
};