function toggleState(i){
	var ElementStyle=document.getElementById(i).style; 
	if (ElementStyle.display!="block"){ 
		ElementStyle.display="block"; 
	} else {
		ElementStyle.display="none"; 
	} 
} 

function displayNone(i){
	var ElementStyle=document.getElementById(i).style; 
	ElementStyle.display="none"; 
}