//  Email Validation //
RE=/^\w+([\.-]?\w+)*@\w+([\.-]?\w+)*(\.\w{2,4})+$/



//  Get Element By ID //
function $(id) { 
	return document.getElementById(id);
 }



// VB Functions in JS//
function Trim(STRING){
	STRING = LTrim(STRING);
	return RTrim(STRING);
}


// VB Functions in JS//
function RTrim(STRING){
	while(STRING.charAt((STRING.length -1))==" "){
	STRING = STRING.substring(0,STRING.length-1);
	}
	return STRING;
}


// VB Functions in JS//
function LTrim(STRING){
	while(STRING.charAt(0)==" "){
	STRING = STRING.replace(STRING.charAt(0),"");
	}
	return STRING;
}


// VB Functions in JS//
function Left(STRING,CHARACTER_COUNT){
	return STRING.substring(0,CHARACTER_COUNT);
}


// VB Functions in JS//
function Right(STRING,CHARACTER_COUNT){
	return STRING.substring((STRING.length - CHARACTER_COUNT),STRING.length);
}



// show & hide options //
function ShowOption (num) {
	for (i=1; i<=3; i++) {
		$('opt'+i).className = 'myclose'
		$('myopt'+i).className='selectedoption1'
	}
	$('opt'+num).className='myopen'
	$('myopt'+num).className='selectedoption2'
	
}



// Contact form validation //
function ContactValidation(frm) {
	for (i=1; i<=3; i++)
		$("error"+i).className = "myhide"

	Fail = true;
	if (Trim(frm.name.value) == 0){
		$("error1").className = "myshow"
		Fail = false
	}

	if (Trim(frm.email.value).length== 0){
		$("error2").className = "myshow"
		Fail = false
	}
	else {
		if (!RE.test(Trim(frm.email.value))){
			$("error2").innerHTML = "Invalid your email address";
			$("error2").className = "myshow"
			Fail = false
		}
	}
	if (Trim(frm.comment.value) < 10){
		$("error3").className = "myshow"
		Fail = false
	}
	if (!Fail)
		return false
	else 
		return true
}




var DDSPEED = 8;
var DDTIMER = 15;
// main function to handle the mouse events //
function ddMenu(id,d){
	var h = document.getElementById(id + '-header');
	var c = document.getElementById(id + '-content');
	clearInterval(c.timer);
	if(d == 1){
		clearTimeout(h.timer);
		if(c.maxh && c.maxh <= c.offsetHeight){return}
		else if(!c.maxh){
			c.style.display = 'block';
			c.style.height = 'auto';
			c.maxh = c.offsetHeight;
			c.style.height = '0px';
	    }
	    c.timer = setInterval(function(){ddSlide(c,1)},DDTIMER);
	  }else{
		h.timer = setTimeout(function(){ddCollapse(c)},50);
	}
}



// collapse the menu //
function ddCollapse(c){
	c.timer = setInterval(function(){ddSlide(c,-1)},DDTIMER);
}



// cancel the collapse if a user rolls over the dropdown //
function cancelHide(id){
	var h = document.getElementById(id + '-header');
	var c = document.getElementById(id + '-content');
	clearTimeout(h.timer);
	clearInterval(c.timer);
	if(c.offsetHeight < c.maxh){
		c.timer = setInterval(function(){ddSlide(c,1)},DDTIMER);
	}
}



// incrementally expand / contract the dropdown and change the opacity //
function ddSlide(c,d){
	var currh = c.offsetHeight;
	var dist;
	if(d == 1){
		dist = (Math.round((c.maxh - currh) / DDSPEED));
	}else{
		dist = (Math.round(currh / DDSPEED));
	}
	if(dist <= 1 && d == 1){
		dist = 1;
	}
	c.style.height = currh + (dist * d) + 'px';
	c.style.opacity = currh / c.maxh;
	c.style.filter = 'alpha(opacity=' + (currh * 100 / c.maxh) + ')';
	if((currh < 2 && d != 1) || (currh > (c.maxh - 2) && d == 1)){
		clearInterval(c.timer);
	}
}