/* Calculate Buttons */
but_cal1on = new Image();    
but_cal1on.src = "calimages/0000_but_cal_on.gif"; 
but_cal1off = new Image();      
but_cal1off.src = "calimages/0000_but_cal_off.gif"; 

but_cal2on = new Image();    
but_cal2on.src = "calimages/0000_but_cal_on.gif"; 
but_cal2off = new Image();      
but_cal2off.src = "calimages/0000_but_cal_off.gif"; 

but_cal3on = new Image();    
but_cal3on.src = "calimages/0000_but_cal_on.gif"; 
but_cal3off = new Image();      
but_cal3off.src = "calimages/0000_but_cal_off.gif"; 

but_cal4on = new Image();    
but_cal4on.src = "calimages/0000_but_cal_on.gif"; 
but_cal4off = new Image();      
but_cal4off.src = "calimages/0000_but_cal_off.gif"; 

but_cal5on = new Image();    
but_cal5on.src = "calimages/0000_but_cal_on.gif"; 
but_cal5off = new Image();      
but_cal5off.src = "calimages/0000_but_cal_off.gif"; 

but_amoon = new Image();    
but_amoon.src = "calimages/0000_but_amo_on.gif"; 
but_amooff = new Image();      
but_amooff.src = "calimages/0000_but_amo_off.gif"; 

but_sumon = new Image();    
but_sumon.src = "calimages/0000_but_sum_on.gif"; 
but_sumoff = new Image();      
but_sumoff.src = "calimages/0000_but_sum_off.gif"; 

/* Functionality */
browser_version = parseFloat(navigator.appVersion); 

if (browser_version >= 3.0){
	THE = 'true';
} else{
	THE = 'false';
}

function THEon(imgName){
	if(THE == 'true'){
		imgOn = eval(imgName + "on.src");
		document[imgName].src = imgOn;
	}
}

function THEoff(imgName) {
	if(THE == 'true'){
		imgOff = eval(imgName + "off.src");
		document[imgName].src = imgOff;
	}
}

function THEalloff(){
	THEoff('pri_buy');
	THEoff('pri_pre');
	THEoff('pri_div');
}

function getImages(){

	/* Tabs */
	tab_moron = new Image();    
	tab_moron.src = "calimages/3002_tab_mor_on.gif"; 
	tab_moroff = new Image();      
	tab_moroff.src = "calimages/3002_tab_mor_off.gif";    
	
	tab_affon = new Image();    
	tab_affon.src = "calimages/3002_tab_aff_on.gif"; 
	tab_affoff = new Image();      
	tab_affoff.src = "calimages/3002_tab_aff_off.gif";    
	
	tab_ltton = new Image();    
	tab_ltton.src = "calimages/3002_tab_lan_on.gif"; 
	tab_lttoff = new Image();      
	tab_lttoff.src = "calimages/3002_tab_lan_off.gif";    
	
	tab_rvbon = new Image();    
	tab_rvbon.src = "calimages/3002_tab_ren_on.gif"; 
	tab_rvboff = new Image();      
	tab_rvboff.src = "calimages/3002_tab_ren_off.gif";    
	
	tab_payon = new Image();    
	tab_payon.src = "calimages/3002_tab_pay_on.gif"; 
	tab_payoff = new Image();      
	tab_payoff.src = "calimages/3002_tab_pay_off.gif";   

}

function THEtab(imgName){

	getImages();
	allOff();
	allOffLayers();

	imgOn = eval(imgName + "on.src");
	document[imgName].src = imgOn;

	if(imgName == "tab_mor"){
		document.getElementById("mortgage").style.display = 'block';
	}

	if(imgName == "tab_aff"){
		document.getElementById("affordability").style.display = 'block';
	}

	if(imgName == "tab_ltt"){
		document.getElementById("landtransfertax").style.display = 'block';
	}

	if(imgName == "tab_rvb"){
		document.getElementById("rentvsbuy").style.display = 'block';
	}

	if(imgName == "tab_pay"){
		document.getElementById("payofffaster").style.display = 'block';
	}

}

function allOffLayers(){

	document.getElementById("mortgage").style.display = 'none';
	document.getElementById("affordability").style.display = 'none';
	document.getElementById("landtransfertax").style.display = 'none';
	document.getElementById("rentvsbuy").style.display = 'none';
	document.getElementById("payofffaster").style.display = 'none';

}

function allOff(){

	document.getElementById("tab_mor").src = "calimages/3002_tab_mor_off.gif";  
	document.getElementById("tab_aff").src = "calimages/3002_tab_aff_off.gif";  
	document.getElementById("tab_ltt").src = "calimages/3002_tab_lan_off.gif";  
	document.getElementById("tab_rvb").src = "calimages/3002_tab_ren_off.gif";  
	document.getElementById("tab_pay").src = "calimages/3002_tab_pay_off.gif";  

}