var letra = 12;
var inter_letra = 1;
var letra_max = 18;
var letra_min = 10;

function augLet(){
	if (letra_max!=letra){
		letra = letra + inter_letra;
		document.getElementById('contentTxt').style.fontSize = letra+"px";
		document.getElementById('contentTxt').style.lineHeight = letra+(inter_letra*3)+"px";
	}
}

function disLet(){
	if (letra_min!=letra){
		letra = letra - inter_letra;
		document.getElementById('contentTxt').style.fontSize = letra+"px";
		document.getElementById('contentTxt').style.lineHeight = letra+(inter_letra*3)+"px";
	}
}

function imprimir(iddoc){
	width = 502; 
	height = 450; 
	leftPosition = 0;
	topPosition = 0;
	leftPosition = (screen.width) ? (screen.width-width)/2 : 0;
	if (screen.height && (screen.height <= 600)) {
		topPosition = 0;
	} else {
		topPosition = (screen.height) ? (screen.height-height)/2 : 0;
	}
	var settings='width='+width+', height='+height+', left='+leftPosition+', top='+topPosition+', toolbar=0, location=0, directories=0, menubar=0, scrollbars=1, resizable=0, status=0';
	var popup=window.open("modules.php?name=webstructure&file=print&idwebstructure="+iddoc, '', settings);
	popup.focus();
}