function fnc_change_image(intProjectId, intImageId){ // Commercial image nav onclick event
	document.getElementById("portfolio_image_img").src = "/images/blank.gif";
	for (var i = arr_projects[intProjectId][1].length - 1; i >= 0; --i){
		document.getElementById("nav_div_" + i).className = "nav_div";
	}
	document.getElementById("nav_div_" + intImageId).className = "nav_div_over";
	document.getElementById("portfolio_text").innerHTML = arr_projects[intProjectId][1][intImageId][1];
	document.getElementById("portfolio_link").href = arr_projects[intProjectId][1][intImageId][2];
	document.getElementById("portfolio_image_img").src = arr_projects[intProjectId][1][intImageId][0].src;
}

function fnc_change_proc(int_image_id, arr_array){ // Residential image nav onclick event
	var obj_proc_image = document.getElementById("portfolio_image_img");
	var obj_proc_link = document.getElementById("portfolio_link");
	var obj_proc_text = document.getElementById("portfolio_text");
	var obj_proc_prev = document.getElementById("nav_div_prev");
	var obj_proc_next = document.getElementById("nav_div_next");

	obj_proc_text.innerHTML = arr_array[int_image_id][1];
	obj_proc_link.href = arr_array[int_image_id][2];
	obj_proc_image.src = arr_array[int_image_id][0].src;

	var int_arr_len = arr_array.length - 1;
	if(int_image_id == 0){
		obj_proc_prev.style.visibility = "hidden";
		obj_proc_next.style.visibility = "visible";
	}else if(int_image_id == int_arr_len){
		obj_proc_prev.style.visibility = "visible";
		obj_proc_next.style.visibility = "hidden";
	}else{
		obj_proc_prev.style.visibility = "visible";
		obj_proc_next.style.visibility = "visible";
	}
}