stat=new Array();
function changeMain(id)
	{
	objParent=document.getElementById(id);
	objDaughter=document.getElementById('iDMain'+id);
	if (stat[id]!=1)
		{
			stat[id]=1;
			objDaughter.style.display='block';
		}
	else
		{
			if(stat[id]==1)
				{
					stat[id]=0;
					objDaughter.style.display='none';
				}
		}
	}