var text_for_content = new Array();
text_for_content.push('<div class="fact1"> </div>');
text_for_content.push('<div class="fact2"> </div>');
text_for_content.push('<div class="fact3"> </div>');
text_for_content.push('<div class="fact4"> </div>');

var ifs_width = 800;
var ifs_timer;
var ifs_step = 15;
var ifs_timeout = 2;
var ifs_direction = "l";
var ifs_slide = document.getElementById("slider");
var ifs_main_text;
var ifs_curr_slide = 0;
if(ifs_slide && text_for_content.length > 0){
	ifs_slide.style.height = ifs_slide.parentNode.offsetHeight + "px";	
	var ifs_slide_button = ifs_slide.getElementsByTagName("A");
	if(ifs_slide_button.length === 1){
		ifs_slide_button[0].style.height = ifs_slide.parentNode.offsetHeight + "px";			
		ifs_slide_button[0].onclick = function(){
			ifsSliderScroll();
			return false;
		}
		ifs_slide_button = ifs_slide_button[0];
	}
	var ifs_content_divs = ifs_slide.getElementsByTagName("DIV");
	if(ifs_content_divs.length > 0){
		for(j=0; j<ifs_content_divs.length; j++){
			if(ifs_content_divs[j].className == "content"){
				var ifs_content = ifs_content_divs[j];
				ifs_content.style.height = ifs_slide.offsetHeight + "px";
				var contet_spans = ifs_content.getElementsByTagName("DIV");
				if(contet_spans.length > 0){
					for(i=0; i<contet_spans.length; i++){
						if(contet_spans[i].className == "content_background" || contet_spans[i].className == "content_inside"){
							contet_spans[i].style.width = ifs_width + "px"; 
							contet_spans[i].style.height = ifs_slide.offsetHeight + "px";
							if(contet_spans[i].className == "content_inside"){
								ifs_main_text = contet_spans[i];
							}
						}
						if(contet_spans[i].className == "nav_butt"){
							contet_spans[i].onmousemove = function(){
								if (window.getSelection){ window.getSelection().removeAllRanges(); }
								else if (document.selection && document.selection.clear){document.selection.clear();}
															
							}							
							var get_buttons = contet_spans[i].getElementsByTagName("DIV");
							if(get_buttons.length > 0){
								for(k=0; k<get_buttons.length; k++){
									if(get_buttons[k].className && (get_buttons[k].className == "back" || get_buttons[k].className == "next")){
										var butt_divs = get_buttons[k].getElementsByTagName("DIV");
										if(butt_divs.length > 0){
											for(l=0; l<butt_divs.length; l++){
												if(butt_divs[l].className == "button_text"){
													butt_divs[l].onmouseout = function(){
														navigationButtons(this.parentNode, "up");
													}
													butt_divs[l].onmousedown = function(){
														navigationButtons(this.parentNode, "down");
													}
													butt_divs[l].onmouseup = function(){
														navigationButtons(this.parentNode, "up");
													}													
												}
											}
										}
									}
								}
							}
						}
					}
				}
			}
		}
	}
	if(ifs_main_text && text_for_content.length > 0 && !isNaN(parseInt(ifs_curr_slide)) && parseInt(ifs_curr_slide) <= text_for_content.length - 1 ){
		ifs_main_text.innerHTML = text_for_content[parseInt(ifs_curr_slide)]; 
		checkButtons();
	}
}

function checkButtons(){
	if(text_for_content.length > 0 && get_buttons.length > 0){
		for(k=0; k < get_buttons.length; k++){
			if(get_buttons[k].className == "back" && ifs_curr_slide === 0){
				get_buttons[k].style.visibility = "hidden";				
				/*
				var butt_shadow = get_buttons[k].getElementsByTagName("DIV");
				if(butt_shadow.length > 0){
					for(l=0; l < butt_shadow.length; l++){
						if(butt_shadow[l].className == "button_shadow" && ifs_curr_slide === 0){
							butt_shadow[l].style.display = "none";
							get_buttons[k].style.cursor = "default";
						}else{
							if(ifs_curr_slide > 0){
								get_buttons[k].style.cursor = "pointer";								
								butt_shadow[l].style.display = "block";								
							}
						}
					}
				}*/
			}else if(get_buttons[k].className == "back" && ifs_curr_slide > 0){
						get_buttons[k].style.visibility = "visible";
			}
			if(get_buttons[k].className == "next" && ifs_curr_slide === text_for_content.length - 1){
				get_buttons[k].style.visibility = "hidden";					
			/*	var butt_shadow = get_buttons[k].getElementsByTagName("DIV");
				if(butt_shadow.length > 0){
					for(l=0; l < butt_shadow.length; l++){
						if(butt_shadow[l].className == "button_shadow" && ifs_curr_slide === text_for_content.length - 1){
							get_buttons[k].style.cursor = "default";							
							butt_shadow[l].style.display = "none";
						}else{
							if(ifs_curr_slide < text_for_content.length - 1){
								get_buttons[k].style.cursor = "pointer";								
								butt_shadow[l].style.display = "block";								
							}
						}
					}
				} */
			}else if(get_buttons[k].className == "next" && ifs_curr_slide < text_for_content.length - 1){
						get_buttons[k].style.visibility = "visible";
			}			
		}		
	}
}

function changeSlide(obj){
	if(obj && text_for_content.length > 0){
		var action = 0;
		if(obj.className && obj.className.toLowerCase() == "next" && parseInt(ifs_curr_slide) < (text_for_content.length - 1)){
			ifs_curr_slide += 1;
			action += 1;
		}
		if(obj.className && obj.className.toLowerCase() == "back" && parseInt(ifs_curr_slide) > 0){
			ifs_curr_slide -= 1;
			action += 1;			
		}
		if(action > 0){
			var new_content = document.createElement("DIV");
			if(new_content){
				new_content.className = "content_inside";
				new_content.style.width = ifs_width + "px"; 
				new_content.style.height = ifs_slide.offsetHeight + "px";
				new_content.innerHTML = text_for_content[parseInt(ifs_curr_slide)];
				ifs_main_text.parentNode.replaceChild(new_content, ifs_main_text);
				ifs_main_text = new_content;	
			}
		}			
	}	
}

function navigationButtons(obj, act){
	if(obj && act){
		var get_shadow = obj.getElementsByTagName("DIV");
		if(get_shadow.length > 0){
			for(i=0; i<get_shadow.length; i++){
				if(get_shadow[i].className == "button_shadow" && act == "down"){
					get_shadow[i].style.display = "none";
					changeSlide(obj);	
				}
				if(get_shadow[i].className == "button_shadow" && act == "up"){
					get_shadow[i].style.display = "block";
					checkButtons();						
				}				
			}
		}
	}
}

function ifsSliderScroll(){
	if(ifs_slide){
		clearInterval(ifs_timer);
		ifs_timer = setInterval("ifsScroll()", ifs_timeout);
	}
}

function trimString(sInString){
	return sInString.replace(/(^\s+)|(\s+$)/g, '');
}

function changeDirection(){
	clearInterval(ifs_timer);
	if(ifs_slide_button){
		var buttons = ifs_slide_button.getElementsByTagName("SPAN");
	}
	if(ifs_direction == "l"){
		ifs_direction = "r";
		if(buttons && buttons.length > 0){
			for(i=0; i<buttons.length; i++){
				if(trimString(buttons[i].className) == "arrow-lt"){
					buttons[i].className = "arrow-rt";
				}
				if(trimString(buttons[i].className) == "arrow-lb"){
					buttons[i].className = "arrow-rb";
				}					
			}
		}
	}else{
		ifs_direction = "l";
		if(buttons && buttons.length > 0){
			for(i=0; i<buttons.length; i++){
				if(trimString(buttons[i].className) == "arrow-rt"){
					buttons[i].className = "arrow-lt";
				}
				if(trimString(buttons[i].className) == "arrow-rb"){
					buttons[i].className = "arrow-lb";
				}					
			}
		}
	}
}
function ifsScroll(){
	if(ifs_slide && ifs_direction && ifs_content){
		if(ifs_direction == "l"){
			if(ifs_content.offsetWidth + ifs_step < ifs_width){
				ifs_content.style.width = ifs_content.offsetWidth + ifs_step + "px";
			}else{
				ifs_content.style.width = ifs_width + "px";
				changeDirection();
			}
		}else if(ifs_direction == "r"){
			if(ifs_content.offsetWidth - ifs_step > 0){
				ifs_content.style.width = ifs_content.offsetWidth - ifs_step + "px";
			}else{
				ifs_content.style.width = "0px";
				changeDirection();
			}
		}
	}	
}