// JavaScript Document

function MM_swapImgRestore() { //v3.0

  var i,x,a=document.MM_sr; for(i=0;a&&i<a.length&&(x=a[i])&&x.oSrc;i++) x.src=x.oSrc;

}



function MM_preloadImages() { //v3.0

  var d=document; if(d.images){ if(!d.MM_p) d.MM_p=new Array();

    var i,j=d.MM_p.length,a=MM_preloadImages.arguments; for(i=0; i<a.length; i++)

    if (a[i].indexOf("#")!=0){ d.MM_p[j]=new Image; d.MM_p[j++].src=a[i];}}

}



function MM_findObj(n, d) { //v4.01

  var p,i,x;  if(!d) d=document; if((p=n.indexOf("?"))>0&&parent.frames.length) {

    d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);}

  if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];

  for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=MM_findObj(n,d.layers[i].document);

  if(!x && d.getElementById) x=d.getElementById(n); return x;

}



function MM_swapImage() { //v3.0

  var i,j=0,x,a=MM_swapImage.arguments; document.MM_sr=new Array; for(i=0;i<(a.length-2);i+=3)

   if ((x=MM_findObj(a[i]))!=null){document.MM_sr[j++]=x; if(!x.oSrc) x.oSrc=x.src; x.src=a[i+2];}

}



function isEmpty(a) {

	if(a==null)	return true;

	if(a=='' || a=="\t" || a=="\n") return true;

	else return false;

}

function isEmail(string) { 

	var pass = true;

	var filter=/^(\w+(?:\.\w+)*)@((?:\w+\.)*\w[\w-]{0,66})\.([a-z]{2,6}(?:\.[a-z]{2})?)$/i;

	if (!filter.test(string)) pass = false;

	return pass;

}

function checkFields(element) {

	var go = true;

	var msg = '';

	if(isEmpty(element.elements[0].value)) {

		msg += 'Please enter your first name \n';

		go = false;

	}

	if(isEmpty(element.elements[1].value)) {

		msg += 'Please enter your last name \n';

		go = false;

	}

	if(!isEmail(element.elements[2].value)) {

		msg += 'Please enter a valid email address \n';

		go = false;

	}
	
	if(isEmpty(element.elements[3].value)) {

		msg += 'Please enter your company name \n';

		go = false;

	}

	if(isEmpty(element.elements[4].value)) {

		msg += 'Please enter your job title \n';

		go = false;

	}

	if(isEmpty(element.elements[5].value)) {

		msg += 'Please enter your telephone number \n';

		go = false;

	}

	if(isEmpty(element.elements[6].value)) {

		msg += 'Please enter your comments/questions \n';

		go = false;

	}


	

	if(!go) {

		alert(msg);

		return false;

	}

}