//// NATAHNOU VSECHNY OBRAZKY DO CATCHE
jaro_over = new Image();
jaro_over.src = "/im_build/jaro_over.gif";

leto_over = new Image();
leto_over.src = "/im_build/leto_over.png";

podzim_over = new Image();
podzim_over.src = "/im_build/podzim_over.png";

zima = new Image();
zima.src = "/im_build/zima.png";


var img_actual_new = ''
var img_actual_old = ''

actual_back = setTimeout('img_actual()',50)


function img_actual(){

	kontrol = 0

	myDate=new Date()
	day=myDate.getDate()
	month=(myDate.getMonth() + 1)
	
	
	
	
	
	
	if( (month>2) || ( (month==2) && (day>=21) ) ){
		img_actual_new = 'jaro'
		img_actual_old = 'jaro.gif'
		kontrol = 1
		}
		
    if( (month>5) || ( (month==5) && (day>=21) ) ){
		img_actual_new = 'leto'
		img_actual_old = 'leto.gif'
		kontrol = 1
		}
		
    if( (month>8) || ( (month==8) && (day>=23) ) ){
		img_actual_new = 'podzim'
		img_actual_old = 'podzim.gif'
		kontrol = 1
		}
		
    if( (month>11) || ( (month==11) && (day>=21) ) ){
		img_actual_new = 'zima'
		img_actual_old = 'zima.gif'
		kontrol = 1
		}
	
	if( kontrol == 0 ){
		img_actual_new = 'zima'
		img_actual_old = 'zima.gif'
		}
	
		
	img_over(img_actual_new)

}


function img_over(img_old){
	
	clearTimeout(actual_back)

	if(img_old == 'jaro'){
	img_new = 'jaro_over.gif'
	}
	
	if(img_old == 'leto'){
	img_new = 'leto_over.gif'
	}

	if(img_old == 'podzim'){
	img_new = 'podzim_over.gif'
	}

	if(img_old == 'zima'){
	img_new = 'zima_over.gif'
	}


	var img = document.getElementById(img_old)
	img.src = '/im_build/'+ img_new
	
	
	if(img_old != img_actual_new){
	
	img = document.getElementById(img_actual_new)
	img.src = '/im_build/'+ img_actual_old
	
	}	
	
	
		
}

function img_out(img_old){

	if(img_old == 'jaro'){
	img_new = 'jaro.gif'
	}
	
	if(img_old == 'leto'){
	img_new = 'leto.gif'
	}

	if(img_old == 'podzim'){
	img_new = 'podzim.gif'
	}

	if(img_old == 'zima'){
	img_new = 'zima.gif'
	}


	if(img_old != img_actual_new){
	
	img = document.getElementById(img_old)
	img.src = '/im_build/'+ img_new
	
	actual_back = setTimeout('img_actual()',50)
	
	}	
	
}