function random_imglink(){
	
  var myimages=new Array();
  //specify random images below. You can have as many as you wish
  myimages[1]="mainImage1.jpg";
  myimages[2]="mainImage2.jpg";
  myimages[3]="mainImage3.jpg";
  myimages[4]="mainImage4.jpg";
  myimages[5]="mainImage5.jpg";
  myimages[6]="mainImage6.jpg";
  myimages[7]="mainImage7.jpg";
  myimages[8]="mainImage8.jpg";
  myimages[9]="mainImage9.jpg";
  myimages[10]="mainImage10.jpg";
  myimages[11]="mainImage11.jpg";
  myimages[12]="mainImage12.jpg";
  myimages[13]="mainImage13.jpg";
  myimages[14]="mainImage14.jpg";
  myimages[15]="mainImage15.jpg";
  myimages[16]="mainImage16.jpg";
  myimages[17]="mainImage17.jpg";
  myimages[18]="mainImage18.jpg";
  myimages[19]="mainImage19.jpg";
  myimages[20]="mainImage20.jpg";
  myimages[21]="mainImage21.jpg";
  myimages[22]="mainImage22.jpg";
  myimages[23]="mainImage23.jpg";
  myimages[24]="mainImage24.jpg";

  var ry = Math.floor(Math.random()*myimages.length);

	if (ry==0){
	  ry=1;
	}
	//alert(document.getElementById("randimg").src);
	document.getElementById("randimg").src = 'images/' + myimages[ry];
}