function layer_(cid,blk)
{
	document.getElementById(cid).style.display=blk;
	document.getElementById(cid).style.zIndex="1000";
}

function remove_layer_bg(parent_id,child_id)
{
	var a = document.getElementById(parent_id);
	var b = document.getElementById(child_id);
	a.removeChild(b);
}
function layer_bg(parent_id)
{	
	
	var a = document.getElementById(parent_id);
		var ah = a.offsetHeight;
	var b = document.createElement('div');
		b.setAttribute('id','transparent_bg');
		b.className="pa l t";
		b.style.width=100+'%';
		b.style.height = ah+'px';
		b.style.backgroundColor="#063996";
		b.style.filter="alpha(opacity=80)";
		b.style.opacity="0.8";
		b.style.zIndex="900";
		a.appendChild(b);
}
function valid(form,aa,bb,cc,value1,value2,err)
{
	var frm = document.getElementById(form);
	var a = document.getElementById(aa);
	var b = document.getElementById(bb);
	var c = document.getElementById(cc);
		if(a.value==value1)
		{
			c.innerHTML=err;
		}
		else if(b.value==value2)
		{
			c.innerHTML=err;
		}
		else
		{
			frm.submit();
		}
			
}