function showtab(tabtoshow,tabtohide,tabselected,tabdeselected,tabselect,tabselectimage,tab,tabimage){
	tabtoshow = document.getElementById(tabtoshow);
	tabtohide = document.getElementById(tabtohide);
	tabselected = document.getElementById(tabselected);
	tabdeselected = document.getElementById(tabdeselected);
	
	tabselect = document.getElementById(tabselect);
	tab = document.getElementById(tab);
	
	tabtoshow.style.display='block';
	tabtohide.style.display='none';
	
	tabselected.className = 'tab_sel';
	tabdeselected.className = 'tab';
	tabselect.src = tabselectimage;
	tab.src = tabimage;
}

function showtab_big(tabtoshow,tabtohide,tabselected,tabdeselected,tabselect,tabselectimage,tab,tabimage){
	tabtoshow = document.getElementById(tabtoshow);
	tabtohide = document.getElementById(tabtohide);
	tabselected = document.getElementById(tabselected);
	tabdeselected = document.getElementById(tabdeselected);
	
	tabselect = document.getElementById(tabselect);
	tab = document.getElementById(tab);	
	
	tabtoshow.style.display='block';
	tabtohide.style.display='none';
	
	tabselected.className = 'big_tab_sel';
	tabdeselected.className = 'big_tab';
	
	tabselect.src = tabselectimage;
	tab.src = tabimage;
}