if(document.images){
	 
	 menu1=new Image
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	 menu3=new Image
	 menu4=new Image
	 next1=new Image
	 next2=new Image
	 back1=new Image
	 back2=new Image
	 book1=new Image
	 book2=new Image
	
	 
	 
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	 else{
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	 menu4=""
	 next1=""
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	 back1=""
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	 book1=""
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	 document.enhanced1=""
	 document.enhanced2=""
	 document.enhanced3=""
	 document.enhanced4=""
	 document.enhanced5=""
	 document.enhanced6=""
	 document.enhanced7=""
	 document.enhanced8=""
	 document.enhanced9=""
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	 document.search=""
	 document.next=""
	 document.back=""
	 document.book=""
	 }