// JavaScript Document
<!--
function initializeHomeSlides()
{
		document.getElementById('slide1').style.visibility='visible';
		document.getElementById('slide2').style.visibility='hidden';
		document.getElementById('slide3').style.visibility='hidden';
		document.getElementById('slide4').style.visibility='hidden';
}

function picSwap(pic_name, i) 
{
	if(i == 1)
		document[pic_name].src="/images/"+pic_name+"_on.jpg";
	else if(i==0)
		document[pic_name].src="/images/"+pic_name+"_off.jpg";
	else
		alert("Error: file:javascript.js; function: picSwap; invalid use; i="+i+"; i is defined for 1 and 0. ");
}
function HomeSlides(slide)
{
		
		document.getElementById('slide1').style.visibility='hidden';
		document.getElementById('slide2').style.visibility='hidden';
		document.getElementById('slide3').style.visibility='hidden';
		document.getElementById('slide4').style.visibility='hidden';
		document.getElementById(slide).style.visibility='visible';
		
}
function checkContactForm()
{
	if (document.contactForm.f_name.value.length == 0 || document.contactForm.f_email.value.length == 0 || document.contactForm.f_text.value.length == 0)
	{
			alert("Please fill in all fields!");
	}else{
		document.contactForm.submit();
	}
}
function checkContactForm()
{
	if (document.contactForm.f_name.value.length == 0 || document.contactForm.f_email.value.length == 0 || document.contactForm.f_text.value.length == 0)
	{
			alert("Please fill in all fields!");
	}else{
		c=allChars(document.contactForm.f_name.value);	
		if(c==0)
			alert("Only characters (a-z; English Alphabet) and space are allowed in a name field!");
		e1=checkEmail(document.contactForm.f_email.value)
		if(e1==0)
			alert("Invalid Email");
		if(c==1 && e1==1)
			document.contactForm.submit();
	}
}
function checkEmailForm()
{
	if (	document.emailForm.f_name.value.length 	== 0 		|| 
			document.emailForm.f_email.value.length == 0 	|| 
			document.emailForm.f_dest.value.length 	== 0	){
			alert(" Please fill in all required fields! ");
	}else{
		c=allChars(document.emailForm.f_name.value);
		if(c==0)
			alert("Only characters (a-z; English Alphabet) and space are allowed in a name field!");
		e1=checkEmail(document.emailForm.f_email.value)
		if(e1==0)
			alert("Your email is invalid!");
		e2=checkEmail(document.emailForm.f_dest.value)
		if(e1==0)
			alert("Your friend's email is invalid!");
		if(c==1 && e1==1 && e2==1)
			document.emailForm.submit();
	}
}
function allChars(field)
{
	for(i=0; i < field.length; i++)
	{
		switch(field.charAt(i).toLowerCase())
		{
			case 'q':case 'w':case 'e':case 'r':case 't':case 'y':
			case 'u':case 'i':case 'o':case 'p':case 'a':case 's':
			case 'd':case 'f':case 'g':case 'h':case 'j':case 'k':
			case 'l':case 'z':case 'x':case 'c':case 'v':case 'b':
			case 'n':case 'm':case ' ':
				break;
			default:  
				return 0;
		}
	}
	return 1;
}
function checkEmail(field)
{
	t=0;
	for(i=0; i < field.length; i++)
	{
		switch(field.charAt(i).toLowerCase())
		{
			case '@':
				t++;
			break;
			case '.':
				t++;
			break;
			default:
			break;
		}
	}
	if(t<2)
		return 0;
	else
		return 1;
}






//-->