function check_email(e) {
		ok = "1234567890qwertyuiop[]asdfghjklzxcvbnm.@-_QWERTYUIOPASDFGHJKLZXCVBNM";

		for(i=0; i < e.length ;i++){
			if(ok.indexOf(e.charAt(i))<0){ 
				return (false);
			}	
		} 

		if (document.images) {
			re = /(@.*@)|(\.\.)|(^\.)|(^@)|(@$)|(\.$)|(@\.)/;
			re_two = /^.+\@(\[?)[a-zA-Z0-9\-\.]+\.([a-zA-Z]{2,4}|[0-9]{1,3})(\]?)$/;
			if (!e.match(re) && e.match(re_two)) {
			return (-1);		
			} 
		}
	}
	
	function setBasketButton(selValue){
			if (selValue > 0){
				document.forms['productForm']['Submit'].disabled = false;
			} else {
				document.forms['productForm']['Submit'].disabled = true;
			}
	}

	function check_form(f) {
		if (f.name.value == "") {
			alert("Please specify a Name");
			return false;
		}
		if (f.txt.value == "") {
			alert("Please specify a Message");
			return false;
		}
		if (f.theBigE.value == "") {
			alert("Please specify an Email");
			return false;
		}
		if (!check_email(f.theBigE.value)) {
			alert("The Email address does not appear to be valid");
			return false;
		}
	}
	
	function check_search_form(f) {
		if (f.search.value == "") {
			alert("Please enter a word to search");
			return false;
		}
	}

	function check_new_address(f) {
		if (f.fname.value == "") {
			alert("Please specify a name");
			return false;
		}
		if (f.sname.value == "") {
			alert("Please specify a surname");
			return false;
		}
		if (f.sname.value == "") {
			alert("Please specify an address");
			return false;
		}
		if (f.sname.value == "") {
			alert("Please specify a town");
			return false;
		}
	}