var theImages = new Array()
theImages[0] = 'img2/w1.jpg'
theImages[1] = 'img2/w2.jpg'
theImages[2] = 'img2/w3.jpg'
theImages[3] = 'img2/w4.jpg'
theImages[4] = 'img2/w5.jpg'
var theImages2 = new Array()
theImages2[0] = 'img2/d1.jpg'
theImages2[1] = 'img2/d2.jpg'
theImages2[2] = 'img2/d3.jpg'
theImages2[3] = 'img2/d4.jpg'
theImages2[4] = 'img2/d5.jpg'
var theImages3 = new Array()
theImages3[0] = 'img2/c1.jpg'
theImages3[1] = 'img2/c2.jpg'
theImages3[2] = 'img2/c3.jpg'
theImages3[3] = 'img2/c4.jpg'
theImages3[4] = 'img2/c5.jpg'
var theImages4 = new Array()
theImages4[0] = 'img2/facia-one.jpg'
theImages4[1] = 'img2/canopies-two.jpg'
theImages4[2] = 'img2/porches-three.jpg'
theImages4[3] = 'img2/building-four.jpg'
theImages4[4] = 'img2/conservatories-five.jpg'
var j = 0
var p=theImages.length; var q=theImages2.length; var r=theImages3.length; var s=theImages4.length;
var whichImage1 = Math.round(Math.random()*(p-1));
var whichImage2 = Math.round(Math.random()*(q-1));
var whichImage3 = Math.round(Math.random()*(r-1));
var whichImage4 = Math.round(Math.random()*(s-1));
function showImage1(){document.write('<a href="upvc_windows.php"><img src="'+theImages[whichImage1]+'"></a>');}
function showImage2(){document.write('<a href="upvc_doors.php"><img src="'+theImages2[whichImage2]+'"></a>');} 
function showImage3(){document.write('<a href="upvc_conservatories.php"><img src="'+theImages3[whichImage3]+'"></a>');}
function showImage4(){document.write('<a href="upvc_fascias.php"><img src="'+theImages4[whichImage4]+'"></a>');}