/*-----------------------------------------------------------------

    yamaha_rollover.js 1.0

    Last updated on 2004.1.14

	Copyright(c) Business Architects Inc. All Rights Reserved.

-----------------------------------------------------------------*/





function ua(){

	var d = document;

	var n = navigator;

	var n_ua = n.userAgent;

	var n_app = n.appName;

	var n_ver = n.appVersion;

	

	//detect ua

	ua.dom = d.getElementById;

	ua.omn = (n_ua.indexOf("OmniWeb") != -1);

	ua.n4 = (d.layers && (!ua.omn));

	ua.opera = (window.opera);

	ua.ie = (d.all && !ua.opera);

	ua.safari = (n_ua.indexOf("AppleWebKit",0) != -1);

	ua.gecko = ((n_ua.indexOf("Gecko/",0) != -1) && !ua.safari);

	ua.netscape = (n_ua.match(/Netscape/));

	

	//get browser version

	if(RegExp){

		if(ua.ie){

			ua.ver = n_ver.match(/MSIE (\d(.\d+)?)/)[1];

		}

		if(ua.gecko){

			ua.ver = n_ver.match(/(\d(.\d+)?) \(/)[1];

		}

		if(ua.netscape){

			ua.ver = n_ua.match(/Netscape\/(\d(.\d+)?)/)[1];

		}

		if(ua.opera){

			ua.ver = n_ua.match(/Opera[ \/](\d(.\d+)?)/)[1];

		}

		ua.ver = parseFloat(ua.ver);

	}else{

		ua.ver = undefined;

	}



	//detect os

	ua.mac = (n_ver.indexOf('Mac',0) != -1);

	ua.win = (n_ver.indexOf('Win',0) != -1);

}

new ua();





//Array Prototype

if(!Array.push){

	Array.prototype.push = function(elem){

		this[this.length] = elem;

	}

}



Array.prototype.indexOf = function(value){

	var i = 0;

	while(i < this.length){

		if(this[i] == value) return i;

		i++;

	}

	return -1;

}



Array.prototype.remove = function(value){

	this.splice(this.indexOf(value),1);

}



//ClassNames

function ClassNames(obj){

	this.obj = obj;

	this.cns = obj.className.split(/\s+/);

};



ClassNames.prototype.add = function(value){

	if(!this.has(value)){

		this.cns.push(value);

		this.obj.className = this.cns.join(' ');

	}

}



ClassNames.prototype.remove = function(value){

	this.cns.remove(value);

	this.obj.className = this.cns.join(' ');

}



ClassNames.prototype.has = function(value){

	if(this.cns.indexOf(value) == -1){

		return false;

	}

	return true;

}



//getElementsbyAttr

document.getElementsByAttr = function(aName, aValue, tName){

	if(document.all || document.getElementsByTagName){

		var attr, elements, result = [];

		

		if(tName){

			elements = document.all ? document.all.tags(tName.toUpperCase()) : document.getElementsByTagName(tName);

		}else{

			elements = document.all ? document.all : document.getElementsByTagName("*");

		}



		for(var i=0;i<elements.length;i++){

			if(aName == 'class' && elements[i].className){

				attr = elements[i].classNames = new ClassNames(elements[i]);

				if(aValue && !attr.has(aValue)){

					continue;

				}

				result.push(elements[i]);

			}else if(elements[i].getAttribute(aName)){

				attr = elements[i].getAttribute(aName);

				if(aValue && attr != aValue){

					continue;

				}

				result.push(elements[i]);

			}

 		}

	}

	return result;

}





//Roll Over Image

function preloadImg(src){

	if(document.images){

		(new Image()).src = src;

	}

}



function preloadImgs(srcs){

	if(!document.images) return;

	for (i=0;i<srcs.length;i++){

		preloadImg(srcs[i]);

	}

}



RollOverImages.pli = new Array();;



function RollOverImages(targetClass,ois,ais){

	if(!document.kkROI) document.kkROI = this;

	this.targetClass = targetClass;

	this.ois = ois;//over image saffix

	this.ais = ais;//down image saffix

	if(targetClass && (ois || ais)) this.define();

}



RollOverImages.prototype.swap = function(names,status){

	for(var i=0;i<names.length;i++){

		var tempobj = (document.all)? document.all[names[i]] : document.getElementById(names[i]);

		if(tempobj[status]) tempobj.src = tempobj[status];

	}

}



RollOverImages.prototype.define = function(){

	if(!document.getElementById && document.all) return;

	if(!document.images) return;

	var pli = RollOverImages.pli;

	var ois = this.ois;

	var ais = this.ais;

	var idprefix = 'kkROIti_';

	var objs = document.getElementsByAttr('class',this.targetClass);

	if(objs.length == 0){

		objs = document.getElementsByAttr('class',this.targetClass,'img');

	}

	for(var i=0;i<objs.length;i++){

		var tempimg = objs[i];

		

		tempimg.id = (tempimg.id)? tempimg.id : (idprefix + this.targetClass + '_' + i);

		

		var basesrc = tempimg.src;

		var imgtype = basesrc.substring(basesrc.lastIndexOf('.'));

		var basename = basesrc.substring(0,basesrc.length - imgtype.length);

		var temppli = new Object;

		tempimg.u = basesrc;

		if(ois){

			tempimg.o = temppli.o = basename + ois + imgtype;

			if(pli.indexOf(temppli.o) == -1) pli.push(temppli.o);

		}

		if(ais){

			tempimg.a = temppli.a = basename + ais + imgtype;

			if(pli.indexOf(temppli.a) == -1) pli.push(temppli.a);

		}

		

		if(tempimg.tagName == 'IMG'){

			var pa = tempimg.parentNode;

			for(var j=0;j<10;j++){

				if(pa && pa.tagName == 'A'){

					if(!pa.kkROIti) pa.kkROIti = new Array();

					pa.kkROIti.push(tempimg.id);

					if(!pa.onmouseover) pa.onmouseover = function(){this._onfocus = this.onfocus; this.onfocus = ''; document.kkROI.swap(this.kkROIti,'o');};

					if(ois && !pa.onmouseout) pa.onmouseout = function(){this.onfocus = this._onfocus; document.kkROI.swap(this.kkROIti,'u');};

					if(ais && !pa.onmousedown) pa.onmousedown = function(){document.kkROI.swap(this.kkROIti,'a');};

					if(ois && ais && !pa.onmouseup) pa.onmouseup = function(){document.kkROI.swap(this.kkROIti,'o');};

					if(ois && !pa.onfocus) pa.onfocus = function(){document.kkROI.swap(this.kkROIti,'o');};

					if(!pa.onblur) pa.onblur = function(){document.kkROI.swap(this.kkROIti,'u');};

					if(ais && !pa.onkeypress) pa.onkeypress = function(){document.kkROI.swap(this.kkROIti,'a');};

					if(ois && ais && !pa.onkeyup) pa.onkeyup = function(){document.kkROI.swap(this.kkROIti,'o');};

					break;

				}else if(pa.parentNode){

					pa = pa.parentNode;

				}else{

					break;

				}

			}

		}else if(tempimg.tagName == 'INPUT'){

			tempimg.kkROIti = [tempimg.id];

			if(!tempimg.onmouseover) tempimg.onmouseover = function(){this._onfocus = this.onfocus; this.onfocus = ''; document.kkROI.swap(this.kkROIti,'o');};

			if(ois && !tempimg.onmouseout) tempimg.onmouseout = function(){this.onfocus = this._onfocus; document.kkROI.swap(this.kkROIti,'u');};

			if(ais && !tempimg.onmousedown) tempimg.onmousedown = function(){document.kkROI.swap(this.kkROIti,'a');};

			if(ois && ais && !tempimg.onmouseup) tempimg.onmouseup = function(){document.kkROI.swap(this.kkROIti,'o');};

			if(ois && !tempimg.onfocus) tempimg.onfocus = function(){document.kkROI.swap(this.kkROIti,'o');};

			if(!tempimg.onblur) tempimg.onblur = function(){document.kkROI.swap(this.kkROIti,'u');};

			if(ais && !tempimg.onkeypress) tempimg.onkeypress = function(){document.kkROI.swap(this.kkROIti,'a');};

			if(ois && ais && !tempimg.onkeyup) tempimg.onkeyup = function(){document.kkROI.swap(this.kkROIti,'o');};

		}

	}

	preloadImgs(pli);

}