function changeColors(el, bgcolor,txtcolor){
	el.style.backgroundColor = bgcolor;
	el.style.color = txtcolor;
}

function changeFontStyle(id,fontstyle){
	var el = document.getElementById(id);
	el.style.fontStyle = fontstyle;
}

function imageResize(img,width){ 
		img.width = width;
}

function imageIdResize(id,width){ 
	var el = document.getElementById(id);	
	el.width = width;
}