window.openElement = 0;
function showHide(elementId){
	theElement = document.getElementById(elementId);
	//alert(openElement +" "+ elementId);
	if(openElement != 0)	{
		if(openElement != elementId){document.getElementById(openElement).style.display = "none";} else{openElement = 0;}
	}
	if(theElement.style.display == "none"){theElement.style.display = "block"; openElement = elementId;}
	else{theElement.style.display = "none";}
}