var ran_number=Math.round(Math.random()*3);
switch (ran_number){
	case 1: 
		document.write('<img src="/sitestyle/images/shutters-for-windows1.jpg" alt="1Shutters for windows" width="730" height="235"/>');
		break;
	case 2: 
		document.write('<img src="/sitestyle/images/shutters-for-windows2.jpg" alt="2Interior window shutters" width="730" height="235"/>');
		break;
	case 3: 
		document.write('<img src="/sitestyle/images/shutters-for-windows3.jpg" alt="3wooden shutters for interiors" width="730" height="235"/>');
		break;
	case 4: 
		document.write('<img src="/sitestyle/images/shutters-for-windows4.jpg" alt="3wooden shutters for interiors" width="730" height="235"/>');
		break;
}