function CenterRandomImage(iFolderLvl,StrCat)
{  
   var iRandomNumber="";
   var StartImg="";
   var FoldLvl="";
   var StrImg="";
   var St="";
   St=new Image();
   StartImg=StrImg;
   
   switch (StrCat){ 
   case "homef":
	       iRandomNumber=53;
		   StrImg="../../img/home/random/homef";
		   iRandomNumber=Math.round(Math.random()*iRandomNumber)
           
	  break   
      case "aqua":
	       iRandomNumber=15;
		   StrImg="../../img/aquatic/random/aqua";
		   iRandomNumber=Math.round(Math.random()*iRandomNumber)
           
	  break
	  case "birds":
	       iRandomNumber=10;
		   StrImg="../../img/birds/random/bird";
		   iRandomNumber=Math.round(Math.random()*iRandomNumber)
           
	  break
	  case "cats":
	       iRandomNumber=9;
		   StrImg="../../img/cats/random/cat";
		   iRandomNumber=Math.round(Math.random()*iRandomNumber)
           
	  break
	  case "dogs":
	       iRandomNumber=34;
		   StrImg="../../img/dogs/random/dog";
		   iRandomNumber=Math.round(Math.random()*iRandomNumber)
           
	  break
	  case "ponds":
	       iRandomNumber=13;
		   StrImg="../../img/pond/random/pond";
		   iRandomNumber=Math.round(Math.random()*iRandomNumber)
           
	  break
	  case "reptiles":
	       iRandomNumber=9;
		   StrImg="../../img/reptiles/random/reptile";
		   iRandomNumber=Math.round(Math.random()*iRandomNumber)
           
	  break
	  case "small":
	       iRandomNumber=8;
		   StrImg="../../img/small/random/small";
		   iRandomNumber=Math.round(Math.random()*iRandomNumber)
           
	  break
	  
  }
   
   for(var i=0;i < parseInt(iFolderLvl);i++)
   {
    FoldLvl=FoldLvl+"../";
   }
   
   StartImg=FoldLvl+StrImg+iRandomNumber+'.jpg';
   St.src=StartImg
   document.randimg.src=St.src;
}