function shopswap() {
var randomnumber=Math.floor(Math.random()*10)+1;
document.write('<style type="text/css">');
document.write('.homeimageswap {');
document.write('background:url(images/homeimage'+randomnumber+'.jpg) 0px 0px no-repeat;');
document.write('}');
document.write('</style>');
	
}