var randomcase=new Array()
randomcase[0]="001"
randomcase[1]="002"
randomcase[2]="003"
getCaseStudy = randomcase[Math.floor(Math.random()*randomcase.length)]
if (getCaseStudy == '001') {
document.write('
');
} else if (getCaseStudy == '002') {
document.write('
');
} else if (getCaseStudy == '003') {
document.write('
');
}