if (document.images) {
   
     button1 = new Image
     button2 = new Image
	 
     button3 = new Image
     button4 = new Image
	 
     button5 = new Image
     button6 = new Image
	 
     button7 = new Image
     button8 = new Image
	 
     button9 = new Image
     button10 = new Image
	 
     button11 = new Image
     button12 = new Image
	 
     button13 = new Image
     button14 = new Image
	 
     button15 = new Image
     button16 = new Image
	 
     button17 = new Image
     button18 = new Image
	 
     button19 = new Image
     button20 = new Image
	 
	 
	 	 
     button1.src = 'images/wedding-invitation.jpg'
     button2.src = 'images/wedding-invitation-hvr.jpg'
	 
	 button3.src = 'images/save-the-date.jpg'
     button4.src = 'images/save-the-date-hvr.jpg'
	 
     button5.src = 'images/special-event.jpg'
     button6.src = 'images/special-event-hvr.jpg'
	 
     button7.src = 'images/thank-you-card.jpg'
     button8.src = 'images/thank-you-card-hvr.jpg'
	 
     button9.src = 'images/btn-wedding.jpg'
     button10.src = 'images/btn-wedding-hvr.jpg'
	 
     button11.src = 'images/btn-save-date.jpg'
     button12.src = 'images/btn-save-date-hvr.jpg'
	 
     button13.src = 'images/btn-event.jpg'
     button14.src = 'images/btn-event-hvr.jpg'
	 
     button15.src = 'images/btn-thank.jpg'
     button16.src = 'images/btn-thank-hvr.jpg'
	 
     button17.src = 'images/register.jpg'
     button18.src = 'images/register-hvr.jpg'
	 
     button19.src = 'images/build.jpg'
     button20.src = 'images/build-hvr.jpg'
}
 
function show1(){
		document.getElementById('sublink1').style.display = 'block';
		document.getElementById('sublink2').style.display = 'none';
		document.getElementById('sublink3').style.display = 'none';
		document.getElementById('sublink4').style.display = 'none';
}

function show2(){
		document.getElementById('sublink1').style.display = 'none';
		document.getElementById('sublink2').style.display = 'block';
		document.getElementById('sublink3').style.display = 'none';
		document.getElementById('sublink4').style.display = 'none';
}

function show3(){
		document.getElementById('sublink1').style.display = 'none';
		document.getElementById('sublink2').style.display = 'none';
		document.getElementById('sublink3').style.display = 'block';
		document.getElementById('sublink4').style.display = 'none';
}

function show4(){
		document.getElementById('sublink1').style.display = 'none';
		document.getElementById('sublink2').style.display = 'none';
		document.getElementById('sublink3').style.display = 'none';
		document.getElementById('sublink4').style.display = 'block';
}