var theTimer;

function bulkOrder(){
	if(document.orderForm.bulkQuant.value >= 15){
		bulkTotalNumber = document.orderForm.bulkQuant.value * 16.95;
		document.orderForm.bulkTotal.value = Math.round(bulkTotalNumber*Math.pow(10,2))/Math.pow(10,2);
	}else{
		alert('Bulk Orders Require A Minimum Of 15 Books');
		document.orderForm.bulkTotal.value = '';
		document.orderForm.bulkQuant.value = '';
	}
}

function sameAddressCheck(){
	var doc = document.orderForm;
	if(doc.sameAddress.checked == true){
		doc.billingName.value = doc.infoName.value;
		doc.billingAddress.value = doc.infoAddress.value;
		doc.billingAddressCont.value = doc.infoAddressCont.value;
		doc.billingCity.value = doc.infoCity.value;
		doc.billingState.value = doc.infoState.value;
		doc.billingZip.value = doc.infoZip.value;
	}else{
		doc.billingName.value = '';
		doc.billingAddress.value = '';
		doc.billingAddressCont.value = '';
		doc.billingCity.value = '';
		doc.billingState.value = '';
		doc.billingZip.value = '';
	}
}

function hideMenu(){
	divtoshow=document.getElementById('dropMenu');
	document.getElementById('dropMenu').style.visibility = 'hidden';
}

function changeBack(){	
	theTimer = setTimeout("hideMenu()", 400);
} 

function showMenu(){
	clearTimeout(theTimer);
	divtoshow=document.getElementById('dropMenu');
	document.getElementById('dropMenu').style.visibility = 'visible';
}

function initializeMenu(){
	var c = getAnchorPosition("dropMenuAnchor");
	//alert("X = "+c.x+" , Y = "+c.y);
	if (document.getElementById) {
		var o = document.getElementById("dropMenu");
		//alert(o.style.left);
		if (o.style) {
			o.style.left = (c.x + 4) + 'px';
			o.style.top = (c.y + 4) + 'px';
			}
		}
	}

// getAnchorPosition(anchorname)
//   This function returns an object having .x and .y properties which are the coordinates
//   of the named anchor, relative to the page.
function getAnchorPosition(anchorname) {
	// This function will return an Object with x and y properties
	var useWindow=false;
	var coordinates=new Object();
	var x=0,y=0;
	// Browser capability sniffing
	var use_gebi=false, use_css=false, use_layers=false;
	if (document.getElementById) { use_gebi=true; }
	else if (document.all) { use_css=true; }
	else if (document.layers) { use_layers=true; }
	// Logic to find position
 	if (use_gebi && document.all) {
		x=AnchorPosition_getPageOffsetLeft(document.all[anchorname]);
		y=AnchorPosition_getPageOffsetTop(document.all[anchorname]);
		}
	else if (use_gebi) {
		var o=document.getElementById(anchorname);
		x=AnchorPosition_getPageOffsetLeft(o);
		y=AnchorPosition_getPageOffsetTop(o);
		}
 	else if (use_css) {
		x=AnchorPosition_getPageOffsetLeft(document.all[anchorname]);
		y=AnchorPosition_getPageOffsetTop(document.all[anchorname]);
		}
	else if (use_layers) {
		var found=0;
		for (var i=0; i<document.anchors.length; i++) {
			if (document.anchors[i].name==anchorname) { found=1; break; }
			}
		if (found==0) {
			coordinates.x=0; coordinates.y=0; return coordinates;
			}
		x=document.anchors[i].x;
		y=document.anchors[i].y;
		}
	else {
		coordinates.x=0; coordinates.y=0; return coordinates;
		}
	coordinates.x=x;
	coordinates.y=y;
	return coordinates;
	}

// getAnchorWindowPosition(anchorname)
//   This function returns an object having .x and .y properties which are the coordinates
//   of the named anchor, relative to the window
function getAnchorWindowPosition(anchorname) {
	var coordinates=getAnchorPosition(anchorname);
	var x=0;
	var y=0;
	if (document.getElementById) {
		if (isNaN(window.screenX)) {
			x=coordinates.x-document.body.scrollLeft+window.screenLeft;
			y=coordinates.y-document.body.scrollTop+window.screenTop;
			}
		else {
			x=coordinates.x+window.screenX+(window.outerWidth-window.innerWidth)-window.pageXOffset;
			y=coordinates.y+window.screenY+(window.outerHeight-24-window.innerHeight)-window.pageYOffset;
			}
		}
	else if (document.all) {
		x=coordinates.x-document.body.scrollLeft+window.screenLeft;
		y=coordinates.y-document.body.scrollTop+window.screenTop;
		}
	else if (document.layers) {
		x=coordinates.x+window.screenX+(window.outerWidth-window.innerWidth)-window.pageXOffset;
		y=coordinates.y+window.screenY+(window.outerHeight-24-window.innerHeight)-window.pageYOffset;
		}
	coordinates.x=x;
	coordinates.y=y;
	return coordinates;
	}

// Functions for IE to get position of an object
function AnchorPosition_getPageOffsetLeft (el) {
	var ol=el.offsetLeft;
	while ((el=el.offsetParent) != null) { ol += el.offsetLeft; }
	return ol;
	}
function AnchorPosition_getWindowOffsetLeft (el) {
	return AnchorPosition_getPageOffsetLeft(el)-document.body.scrollLeft;
	}	
function AnchorPosition_getPageOffsetTop (el) {
	var ot=el.offsetTop;
	while((el=el.offsetParent) != null) { ot += el.offsetTop; }
	return ot;
	}
function AnchorPosition_getWindowOffsetTop (el) {
	return AnchorPosition_getPageOffsetTop(el)-document.body.scrollTop;
	}