function collapsBlock(blockID, pic1, pic2)
{
	var picName = blockID + 'Pic';

	var obj=document.getElementById(blockID);
	var obj2=document.getElementById(picName);
	
	if(obj.style.display == "block") 
	{
		obj.style.display = "none";
		obj2.src = pic1;
	}
	else 
	{
		obj.style.display = "block";
		obj2.src = pic2;
	}
}