function solardata() {
	var open = window.open( 'http://www.dualsealglass.co.uk/solarperformance.html', 'DualThermSolar', 
		'status = 0, width = 900, height = 800, resizable = 0' );	
}

function hpdata() {
	var open = window.open( 'http://www.dualsealglass.co.uk/hpperformance.html', 'DualThermHP', 
		'status = 0, width = 900, height = 900, resizable = 0' );	
}

function productstandards() {
	var open = window.open( 'http://www.dualsealglass.co.uk/prodstandards.html', 'ProductStandards', 
		'status = 0, width = 800, height = 225, resizable = 0' );	
}

function availability() {
	var open = window.open( 'http://www.dualsealglass.co.uk/stockavailability.html', 'StockAvailability', 
		'status = 0, width = 900, height = 390, resizable = 0' );	
}

function sound() {
	var open = window.open( 'http://www.dualsealglass.co.uk/soundperformance.html', 'SoundPerformance', 
		'status = 0, width = 960, height = 400, resizable = 0, scrollbars = 1' );	
}