function ShowDiv(Id)
{
	var divs = document.getElementsByClassName("B1");
	for(i=0;i<divs.length;i++) 
	{
		if(divs[i].id == Id)
		{
			Effect.toggle(Id,'blind',{duration:0.5});
		}
		else
		{divs[i].style.display="none";}
	}
}