var d = (document.getElementById)? 'document.getElementById':'document.all';
prd_top_flag = 0;

//...only INDEX (HOME) page
function index_random(){
	index_ar = new Array("ax100","ix800","ml790","n26","sx690II","al400");
	index_no = Math.floor(Math.random()*index_ar.length);
	index_name = index_ar[index_no];
	index_img = "img/home/index_"+index_name+".jpg";
	index_link = "prd_"+index_name+".html";
	document.write("<a href='"+index_link+"'><img src='"+index_img+"' alt='"+index_name+"'></a>");
}

//...only prd top page
function prd_setup(){
	
	p_ecr = new Array("ax50","ax100","cx200","ex300","tx500","al400","sx580","sx590","sx590II","mx600","sx690","sx690II","ml790");
	p_fec = new Array("jx10","pz1");
	p_pos = new Array("ix800");
	p_drw = new Array("n26","t33");
	p_per = new Array("ozv","ozl");
	
	pre_img = new Image();
	for(i in p_ecr){pre_img.src="img/products/prd_i_" + p_ecr[i] + "_o.jpg";}
	for(i in p_fec){pre_img.src="img/products/prd_i_" + p_fec[i] + "_o.jpg";}
	for(i in p_pos){pre_img.src="img/products/prd_i_" + p_pos[i] + "_o.jpg";}
	for(i in p_drw){pre_img.src="img/products/prd_i_" + p_drw[i] + "_o.jpg";}
	for(i in p_per){pre_img.src="img/products/prd_i_" + p_per[i] + "_o.jpg";}
	prd_top_flag = 1;
	p_ecr_flag = p_fec_flag = p_pos_flag = p_drw_flag = p_per_flag = 0;
}

//...tab menu on prd pages
function prd_tab(n){
	
	var now_display = eval(d+"('prd-s-" + n + "').style.display");
	if(now_display == 'none'){
		set_display = 'block';eval("p_" + n + "_flag=1");
	}else{
		set_display = 'none'; eval("p_" + n + "_flag=0");
	}
	eval(d + "('prd-s-" + n + "').style.display='" + set_display + "';");
	if(prd_top_flag){ prd_ch_img(n);}
}

//...change button images on prd top page
function prd_ch_img(nn){
	if((!p_ecr_flag)&&(!p_fec_flag)&&(!p_pos_flag)&&(!p_drw_flag)&&(!p_per_flag)){
		for(i in p_ecr){img_name = p_ecr[i];document.images[img_name].src="img/products/prd_i_" + img_name + ".jpg";}
		for(i in p_fec){img_name = p_fec[i];document.images[img_name].src="img/products/prd_i_" + img_name + ".jpg";}
		for(i in p_pos){img_name = p_pos[i];document.images[img_name].src="img/products/prd_i_" + img_name + ".jpg";}
		for(i in p_drw){img_name = p_drw[i];document.images[img_name].src="img/products/prd_i_" + img_name + ".jpg";}
		for(i in p_per){img_name = p_per[i];document.images[img_name].src="img/products/prd_i_" + img_name + ".jpg";}
		
	}else{
		img_flag = (p_ecr_flag)? '.jpg':'_o.jpg';
		for(i in p_ecr){img_name = p_ecr[i];document.images[img_name].src="img/products/prd_i_" + img_name + img_flag;}
		img_flag = (p_fec_flag)? '.jpg':'_o.jpg';
		for(i in p_fec){img_name = p_fec[i];document.images[img_name].src="img/products/prd_i_" + img_name + img_flag;}
		img_flag = (p_pos_flag)? '.jpg':'_o.jpg';
		for(i in p_pos){img_name = p_pos[i];document.images[img_name].src="img/products/prd_i_" + img_name + img_flag;}
		img_flag = (p_drw_flag)? '.jpg':'_o.jpg';
		for(i in p_drw){img_name = p_drw[i];document.images[img_name].src="img/products/prd_i_" + img_name + img_flag;}
		img_flag = (p_per_flag)? '.jpg':'_o.jpg';
		for(i in p_per){img_name = p_per[i];document.images[img_name].src="img/products/prd_i_" + img_name + img_flag;}
	}
}