function BookSearch(){
	  
	  if(document.booksearch.author.value != 0) {
  		var author = '%26field-author%3D' + document.booksearch.author.value	+ '%26select-author%3D' + document.booksearch.selectauthor.value;
  	}else{
  		var author = "";											
  	}	
  	
  	if(document.booksearch.booktitle.value != 0) {
  		var booktitle = '%26title%3D' + document.booksearch.booktitle.value	+ '%26select-title%3D' + document.booksearch.selecttitle.value;
  	}else{
  		var booktitle = "";											
  	}
  	
  	if(document.booksearch.keywords.value != 0) {
  		var keywords = '%26field-keywords%3D' + document.booksearch.keywords.value;
  	}else{
  		var keywords = "";											
  	}
  	
  	if(document.booksearch.publisher.value != 0) {
  		var publisher = '%26field-publisher%3D' + document.booksearch.publisher.value;
  	}else{
  		var publisher = "";											
  	}
  	
  	if(document.booksearch.isbn.value != 0) {
  		var isbn = '%26field-isbn%3D' + document.booksearch.isbn.value;
  	}else{
  		var isbn = "";											
  	}
	  
	  if(document.booksearch.node.value != 0) {
  		var node = '%26node%3D' + document.booksearch.node.value;
  	}else{
  		var node = "";											
  	}
  	
  	if(document.booksearch.format.value != 0) {
  		var format = '%26field-feature_browse-bin%3D' + document.booksearch.format.value;
  	}else{
  		var format = "";											
  	}
  	
  	if(document.booksearch.binding.value != 0) {
  		var binding = '%26field-binding_browse-bin%3D' + document.booksearch.binding.value;
  	}else{
  		var binding = "";											
  	}
  	
  	if(document.booksearch.age.value != 0) {
  		var age = '%26field-subject%3D' + document.booksearch.age.value;
  	}else{
  		var age = "";											
  	}
  	
  	if(document.booksearch.booklanguage.value != 0) {
  		var booklanguage = '%26field-language%3D' + document.booksearch.booklanguage.value;
  	}else{
  		var booklanguage = "";											
  	}
	  	  
		if(document.booksearch.pct1.value == "0" && document.booksearch.pct2.value == "0"){
      var discount = "";											  		
		}else if(document.booksearch.pct1.value != null) {
  		var discount = '%26pct-off%3D' + document.booksearch.pct1.value + '-' + document.booksearch.pct2.value;	
  	}else{
  		var discount = "";											
  	}		
    
    if(document.booksearch.rating.value != 0) {
  		var rating = '%26p%5F72%3D' + document.booksearch.rating.value;
  	}else{
  		var rating = "";											
  	}		
    
		if(document.booksearch.shipping.checked) {
			var shipping = '%26field-availability_class%3D5-30';											
		}else{
			var shipping = "";											
		}
		
		if(document.booksearch.prime.checked) {  		  									
  		var prime = '%26p%5F76%3D1';	  									
  	}else{
  		var prime = "";											
  	}	
  	
  	if(document.booksearch.condition.value != 0) {
  		var condition = '%26' + document.booksearch.condition.value;
  	}else{
  		var condition = "";											
  	}
  	  				
	
		window.open('http://www.amazon.com/gp/redirect.html?ie=UTF8&location=%2Fgp%2Fsearch%2F%26search-alias%3Dstripbooks%26unfiltered%3D1' 
  		+ author
  		+ booktitle
  		+ keywords
  		+ publisher
  		+ isbn
  		+ node
  		+ condition
  		+ format
  		+ binding
  		+ age
  		+ booklanguage  		
  		+ '%26field-dateop%3D' + document.booksearch.datestate.value
  		+ '%26field-datemod%3D' + document.booksearch.datemonth.value
  		+ '%26field-dateyear%3D' + document.booksearch.dateyear.value
  		+ '%26sort%3D' + document.booksearch.sort.value
  		+ rating
  		+ prime
  		+ discount
  		+ shipping
  		+ '%26redirect%3Dtrue&tag=dischunt01-20&linkCode=ur2&camp=1789&creative=390957')
  }