function hide_all() {
	var div1=document.getElementById('users_blogs_block');
	var div2=document.getElementById('editors_blogs_block');
	var div3=document.getElementById('projects_blogs_block');
	var div4=document.getElementById('poli_blogs_block');
	div1.style.visibility='hidden';
	div1.style.display='none';
	div2.style.visibility='hidden';
	div2.style.display='none';
	div3.style.visibility='hidden';
	div3.style.display='none';	
	div4.style.visibility='hidden';
	div4.style.display='none';	
}

function unset_class_all() {
	var li1=document.getElementById('users_blogs_tab');
	var li2=document.getElementById('editors_blogs_tab');
	var li3=document.getElementById('projects_blogs_tab');
	var li4=document.getElementById('poli_blogs_tab');
	li1.setAttribute("class", "");
	li1.setAttribute("className", "");
	li2.setAttribute("class", "");
	li2.setAttribute("className", "");
	li3.setAttribute("class", "");		
	li3.setAttribute("className", "");		
	li4.setAttribute("class", "");		
	li4.setAttribute("className", "");		
}

function hide(id) {
	var div=document.getElementById(id);
	div.style.visibility='hidden';
	div.style.display='none';
}

function show(id) {
	var div=document.getElementById(id);
	div.style.visibility='visible';
	div.style.display='block';
}

function unset_class(id) {
	var li=document.getElementById(id);
	li.setAttribute("class", "");
	li.setAttribute("className", "");
	
}

function set_class(id) {
	var li=document.getElementById(id);
	li.setAttribute("class", "active");
	li.setAttribute("className", "active");
}