function omover(elem){
	document.getElementById(elem).style.backgroundImage='url(images/'+elem+'_sel.jpg)';
	document.getElementById(elem).style.borderRightColor='#C0C0C0';
}

function omout(elem){
	document.getElementById(elem).style.backgroundImage='url(images/'+elem+'.jpg)';
	document.getElementById(elem).style.borderRightColor='#DCDCDC';
}

function omoverpng(elem){
	document.getElementById(elem).style.backgroundImage='url(images/'+elem+'_sel.png)';
	document.getElementById(elem).style.borderRightColor='#C0C0C0';
}

function omoutpng(elem){
	document.getElementById(elem).style.backgroundImage='url(images/'+elem+'.png)';
	document.getElementById(elem).style.borderRightColor='#DCDCDC';
}

function omovertabpng(elem, num){
	var myelem = elem + "_" + num; 
	document.getElementById(myelem).style.backgroundImage='url(images/'+elem+'_sel.png)';
	document.getElementById(myelem).style.borderRightColor='#C0C0C0';
}

function omouttabpng(elem, num){
	var myelem = elem + "_" + num; 
	document.getElementById(myelem).style.backgroundImage='url(images/'+elem+'.png)';
	document.getElementById(myelem).style.borderRightColor='#DCDCDC';
}