var isCSS, isW3C, isIE4, isNN4, isIE6CSS;
function initDHTMLAPI() {
	if (document.images) {
		isCSS = (document.body && document.body.style) ? true : false;
		isW3C = (isCSS && document.getElementById) ? true : false;
		isIE4 = (isCSS && document.all) ? true : false;
		isNN4 = (document.layers) ? true : false;
		isIE6CSS = (document.compatMode && document.compatMode.indexOf("CSS1") >= 0) ? true : false;
	}
}
window.onload = initDHTMLAPI;
function seekLayer(doc, name) {
	var theObj;
	for (var i = 0; i < doc.layers.length; i++) {
		if (doc.layers[i].name == name) {
			theObj = doc.layers[i];
			break;
		}
		if (doc.layers[i].document.layers.length > 0) {
			theObj = seekLayer(document.layers[i].document, name);
		}
	} 
return theObj;
}
function getRawObject(obj) {
	var theObj;
	if (typeof obj == "string") {
		if (isW3C) {
			theObj = document.getElementById(obj);
		} else if (isIE4) {
			theObj = document.all(obj);
		} else if (isNN4) {
			theObj = seekLayer(document, obj);
		}
	} else {
		theObj = obj;
	}
	return theObj;
}
function getObject(obj) {
	var theObj = getRawObject(obj);
	if (theObj && isCSS) {
		theObj = theObj.style;
	}
	return theObj;
}
function shiftTo(obj, x, y) {
	var theObj = getObject(obj);
	if (theObj) {
		if (isCSS) {
			var units = (typeof theObj.left == "string") ? "px" : 0;
			theObj.left = x + units;
			theObj.top = y + units;
		} else if (isNN4) {
				theObj.moveTo(x,y)
		}
	}
}
function shiftBy(obj, deltaX, deltaY) {
	var theObj = getObject(obj);
	if (theObj) {
		if (isCSS) {
			var units = (typeof theObj.left == "string") ? "px" : 0;
			theObj.left = getObjectLeft(obj) + deltaX + units;
			theObj.top = getObjectTop(obj) + deltaY + units;
		} else if (isNN4) {
				theObj.moveBy(deltaX, deltaY);
		}
	}
}
function setZIndex(obj, zOrder) {
	var theObj = getObject(obj);
	if (theObj) {
		theObj.zIndex = zOrder;
	}
}
function setBGColor(obj, color) {
	var theObj = getObject(obj);
	if (theObj) {
		if (isNN4) {
			theObj.bgColor = color;
		} else if (isCSS) {
			theObj.backgroundColor = color;
		}
	}
}
function show(obj) {
	var theObj = getObject(obj);
	if (theObj) {
		theObj.visibility = "visible";
	}
}
function hide(obj) {
	var theObj = getObject(obj);
	if (theObj) {
		theObj.visibility = "hidden";
	}
}
function getObjectLeft(obj) {
	var elem = getRawObject(obj);
	var result = 0;
	if (document.defaultView) {
		var style = document.defaultView;
		var cssDecl = style.getComputedStyle(elem, "");
		result = cssDecl.getPropertyValue("left");
	} else if (elem.currentStyle) {
		result = elem.currentStyle.left;
	} else if (elem.style) {
		result = elem.style.left;
	} else if (isNN4) {
		result = elem.left;
	}
	return parseInt(result);
}
function getObjectTop(obj) {
	var elem = getRawObject(obj);
	var result = 0;
	if (document.defaultView) {
		var style = document.defaultView;
		var cssDecl = style.getComputedStyle(elem, "");
		result = cssDecl.getPropertyValue("top");
	} else if (elem.currentStyle) {
		result = elem.currentStyle.top;
	} else if (elem.style) {
		result = elem.style.top;
	} else if (isNN4) {
		result = elem.top;
	}
	return parseInt(result);
}
function getObjectWidth(obj) {
	var elem = getRawObject(obj);
	var result = 0;
	if (document.offsetWidth) {
		result = elem.offsetWidth;
	} else if (elem.clip && elem.clip.width) {
			result = elem.clip.width;
	} else if (elem.style && elem.style.pixelWidth) {
			result = elem.style.pixelWidth;
	}
	return parseInt(result);
}
function getObjectHeight(obj) {
	var elem = getRawObject(obj);
	var result = 0;
	if (document.offsetHeight) {
		result = elem.offsetHeight;
	} else if (elem.clip && elem.clip.height) {
			result = elem.clip.height;
	} else if (elem.style && elem.style.pixelHeight) {
			result = elem.style.pixelHeight;
	}
	return parseInt(result);
}
function getInsideWindowWidth() {
	if (window.innerWidth) {
		return window.innerWidth;
	} else if (isIE6CSS) {
		return document.body.parentElement.clientWidth;
	} else if (document.body && document.body.clientWidth) {
		return document.body.clientWidth;
	}
	return 0;
}
function getInsideWindowHeight() {
	if (window.innerHeight) {
		return window.innerHeight;
	} else if (isIE6CSS) {
		return document.body.parentElement.clientHeight;
	} else if (document.body && document.body.clientHeight) {
		return document.body.clientHeight;
	}
	return 0;
}