function iniSize(zooming) {
	var opera;
	var ie;
	var dom;
	var origSize = "";
	if (navigator.userAgent.indexOf("Opera") != -1) opera = true
	else if (document.all && !opera) ie = true
	else if (!document.all && document.getElementById) dom = true;
	if (ie) {
		var currSize = document.getElementById(zooming).currentStyle.fontSize;
	} 
	else if (dom || opera) {
		
		var compStyle = getComputedStyle(document.getElementById(zooming), "");
		var currSize = compStyle.getPropertyValue("font-size");
	}
	var origSize = currSize.split("px");
	return origSize[0] ;
}
function zoomIn(zoomText) {
	var currentText = iniSize(zoomText) ;
	my_value = currentText.split('pt');
	if(my_value.length > 1){
		currentText = 11;
	}else{
		currentText = my_value[0];	
	}
	if (currentText < 15) {
		currentText++;
		document.getElementById(zoomText).style.fontSize = currentText + 'px';
	}
}
function zoomOut(zoomText) {
	var currentText = iniSize(zoomText) ;
	my_value = currentText.split('pt');
	currentText = my_value[0];
	if (currentText > 11) {
		currentText--;
		document.getElementById(zoomText).style.fontSize = currentText + 'px';
	}
}