function setPic(image){

	document.mainpic.src = 'images/'+image;
	
}


function imgOn(imgName) {
	if (document.images) {
		document[imgName].src = eval(imgName + 'on.src');
	}
}

function imgOff(imgName) {
	if (document.images) {
		document[imgName].src = eval(imgName + 'off.src');
	}
}

function imgOnsel(imgName) {
	if (document.images) {
		document[imgName].src = eval(imgName + 'sel.src');
	}
}

function imgOffsel(imgName) {
	if (document.images) {
		document[imgName].src = eval(imgName + 'sel.src');
	}
}

function view_ad(num){
	document.ad_large.src = 'images/'+num+'.jpg';
	current_ad = num;
}


function expandit(curobj,arr){
	e = '';
	ns6=document.getElementById&&!document.all?1:0;
	e = ns6?document.getElementById(curobj).style:document.all[curobj].style;

	if (e.display == "none"){
		e.display = "";
		//document[arr].src = eval('arron.src');
	} else {
		e.display = "none";
		//document[arr].src = eval('arroff.src');
	}
	
	
}

function stringFilter (input,fchars) {
	s = input;
	filteredValues = fchars;
     	var i;
	var returnString = "";
	for (i = 0; i < s.length; i++) {  		
                     var c = s.charAt(i);
		if (filteredValues.indexOf(c) == -1) {
			returnString += c;
		}
	}
	return returnString;
}
function formatUsPhone(field){
	
	pn = field.value;
	slen = pn.length;
	pn = stringFilter(pn,"()- abcdeffghijklmnopqrstuvwxyzABCDEFFGHIJKLMNOPQRSTUVWXYZ");
	var newp = "";
	for (i=0; i<slen; i++){
	  	val = pn.charAt(i);
		if (i == 0){
			newp = "(";
		}
		if (i == 3){
			newp += ") ";
		}
		if (i == 6){
			newp += "-";
		}
		if (i == 10){
			newp += " - ext ";
			//break;
		}
		newp += val;
	}
	field.value = newp;
}