function shopswap() {
var randomnumber=Math.floor(Math.random()*3)+1;
document.write('<style type="text/css">');
document.write('.funnelshop {');
document.write('background:url(images/shop/shopthumbnail'+randomnumber+'.jpg) 10px 10px no-repeat;');
document.write('}');
document.write('</style>');


var randomnumber2=Math.floor(Math.random()*3)+1;
document.write('<style type="text/css">');
document.write('.funnelshop2 {');
document.write('background:url(../images/shop/shopthumbnail'+randomnumber2+'.jpg) 10px 10px no-repeat;');
document.write('}');
document.write('</style>');

var randomnumber3=Math.floor(Math.random()*7)+1;
document.write('<style type="text/css">');
document.write('.workmain {');
document.write('background:url(../images/work/workmain'+randomnumber3+'.jpg) 10px 10px no-repeat;');
document.write('}');
document.write('</style>');
	
}