function random_imglink(){
  var myimages=new Array()
  //specify random images below. You can have as many as you wish
  //myimages[1]="e-banner/Emerging-Self.gif"
// myimages[1]="e-banner/I_Diseases.gif"
 myimages[1]="e-banner/Causal_Inference.gif"
  myimages[2]="e-banner/Frontiers_in_Anti-infective_Drug_Discovery.gif"
   myimages[3]="e-banner/Frontiers_in_Drug_Design_&_Discovery_Volume 1.gif"
    myimages[4]="e-banner/Frontiers_in_Drug_Design_&_Discovery_Volume 2.gif"
	 myimages[5]="e-banner/Frontiers_in_Drug_Design_&_Discovery_Volume 3.gif"
	  myimages[6]="e-banner/Frontiers_in_Drug_Design_&_Discovery_Volume 4.gif"
	    myimages[7]="e-banner/Frontiers_in_Medicinal_Chemistry_Volume 1.gif"
		myimages[8]="e-banner/Frontiers_in_Medicinal_Chemistry_Volume_2.gif"
		myimages[9]="e-banner/Frontiers_in_Medicinal_Chemistry_Volume 3.gif"
		myimages[10]="e-banner/Frontiers_in_Medicinal_Chemistry_Volume 4.gif"
		myimages[11]="e-banner/Frontiers_in_Medicinal_Chemistry_Volume 5.gif"
			myimages[12]="e-banner/New_Developments_in_Medicinal_Chemistry.gif"
myimages[13]="e-banner/Pathogenic_Escherichia_coli_in_Latin_America.gif"
myimages[14]="e-banner/Protozoa.gif"
myimages[15]="e-banner/Latest_Findings_of_Omega3_Long_ChainPolyunsaturated_Fatty_Acids_From_Molecular_Mechanisms_to_New_Applications_in_Health_and_Diseases.gif"
 myimages[16]="e-banner/Frontiers_in_Drug_Design_&_Discovery_Volume 5.gif"
  //specify corresponding links below
  var imagelinks=new Array()
  //imagelinks[1]="http://benthamscience.com/ebooks/9781608050277/index.htm"
// imagelinks[1]="http://benthamscience.com/ebooks/9781608050055/index.htm"
 imagelinks[1]="http://benthamscience.com/ebooks/9781608051816/index.htm"
  imagelinks[2]="http://benthamscience.com/ebooks/9781608051588/index.htm"
 imagelinks[3]="http://benthamscience.com/ebooks/9781608051991/index.htm"
 imagelinks[4]="http://benthamscience.com/ebooks/9781608052004/index.htm"
  imagelinks[5]="http://benthamscience.com/ebooks/9781608052011/index.htm"
  imagelinks[6]="http://benthamscience.com/ebooks/9781608052028/index.htm"
   imagelinks[7]="http://benthamscience.com/ebooks/9781608052042/index.htm"
    imagelinks[8]="http://benthamscience.com/ebooks/9781608052059/index.htm"
	 imagelinks[9]="http://benthamscience.com/ebooks/9781608052066/index.htm"
	 imagelinks[10]="http://benthamscience.com/ebooks/9781608052073/index.htm"
	  imagelinks[11]="http://benthamscience.com/ebooks/9781608052080/index.htm"
	  imagelinks[12]="http://benthamscience.com/ebooks/9781608051274/index.htm"
	  imagelinks[13]="http://benthamscience.com/ebooks/9781608051922/index.htm"
	   imagelinks[14]="http://benthamscience.com/ebooks/9781608051489/index.htm"
	    imagelinks[15]="http://benthamscience.com/ebooks/9781608051779/index.htm"
		  imagelinks[16]="http://benthamscience.com/ebooks/9781608052035/index.htm"
  var ry=Math.floor(Math.random()*myimages.length)

  if (ry==0)
     ry=1
     document.write('<a href='+'"'+imagelinks[ry]+'"'+' onclick="window.open(this.href); return false;"><img src="'+myimages[ry]+'" border=0></a>')
}

  random_imglink()