//FUNCTION TO TOGGLE SHOW/HIDE HTML ELEMENTS.

function showHide(shID){
	if (document.getElementById(shID)){
		if (document.getElementById(shID).style.display != 'block'){
			document.getElementById(shID).style.display = 'block';
		}
		else{
			document.getElementById(shID).style.display = 'none';
		}
	}
}

//FUNCTION TO SHOW AN AREA BY ID

function showElementByID(ID){
	if (document.getElementById(ID)){
		if (document.getElementById(ID).style.display != 'block'){
			document.getElementById(ID).style.display = 'block';
		}
	}
}

//FUNCTION TO HIDE AN AREA BY ID

function hideElementByID(ID){
	if (document.getElementById(ID)){
		if (document.getElementById(ID).style.display != 'none'){
			document.getElementById(ID).style.display = 'none';
		}
	}
}

//FUNCTION FOR EMPTY VALIDATION
function checkEmpty(ID){
	if(document.getElementById(ID)){
		if(document.getElementById(ID).value == ""){
			document.getElementById(ID).focus();
			alert("Please enter the value");
			return false;
		}
		else{
			return true;
		}
	}
	return false;
}