if (document.images){
img1on = new Image();
img1on.src = "/images/menu/homeon.gif";		//Active Images
img2on = new Image();
img2on.src = "/images/menu/aboutuson.gif";
img4on = new Image();
img4on.src = "/images/menu/enquirieson.gif";
img5on = new Image();
img5on.src = "/images/menu/searchon.gif";

img1off = new Image();
img1off.src = "/images/menu/homeoff.gif";		//Inactive Images
img2off = new Image();
img2off.src = "/images/menu/aboutusoff.gif";
img4off = new Image();
img4off.src = "/images/menu/enquiriesoff.gif";
img5off = new Image();
img5off.src = "/images/menu/searchoff.gif";

}
//Function to activate
function imgOn(imgName){
	if (document.images){
		document[imgName].src = eval(imgName + "on.src");
		
	}
}
//Function to deactivate
function imgOff(imgName){
	if (document.images){
		document[imgName].src = eval(imgName + "off.src");
		
	}
}
//function to Preload images (for next page)
function MM_preloadImages() { //v3.0
  var d=document; if(d.images){ if(!d.MM_p) d.MM_p=new Array();
    var i,j=d.MM_p.length,a=MM_preloadImages.arguments; for(i=0; i<a.length; i++)
    if (a[i].indexOf("#")!=0){ d.MM_p[j]=new Image; d.MM_p[j++].src=a[i];}}
}

function jumpPage(newLoc) {
	newPage = newLoc.options[newLoc.selectedIndex].value
	
	if (newPage != "") {
	window.location.href = newPage
	
	}
}
function isANumber(number) {
  answer = 1;

  if (!parseFloat(number)) {
    //the first digit wasn't numeric
    answer = 0;
  } else {

//the first digit was numeric, so check the rest

    for (var i=0; i<number.length; i++) {
      if ((number.charAt(i) != "0")
        && (!parseFloat(number.charAt(i)))) {
          answer = 0;
          break;
      }
    }
  }
  return answer;
}

function exists(userEntry) {

  var aCharExists = 0;
  var entry=userEntry;

  if(entry) {
     for (var i=0; i<entry.length; i++) {
       if (entry.charAt(i) !="") {
         aCharExists=1;
       }
     }
  }

  if(!aCharExists) {
  return 0;
  }

  return 1;
}

function chkQuantity() {
	if (!(isANumber(document.order.quantity.value))) {
		alert('Order quantity must be 1 or more. Please amend');
		document.order.quantity.select();
		document.order.quantity.focus();
	}
	else {
		document.order.submit();
	}
}

function validate(f) {
	if (!(f.enquiry.value)) {
		alert('Please provide the nature of your enquiry in the Enquiry box');
		f.enquiry.focus();
		return false;
	}
	else {
		return true;
	}
}