var bannerImangeName;

function rnd(max) { 
  var rndnum = max * Math.random() ;
  rndnum = Math.ceil (rndnum) ;
  return rndnum; 
} 

// Call random number generator 

function randomBannerImage() { 
  var n = rnd(20);
  if ((n%2)==0) {
    bannerImangeName = "<img src=\"images/globalLinkHover/consultency.jpg\" border=\"0\" alt=\"Welcome to Synesis IT\" />";
  	document.getElementById('bannerImage').innerHTML = bannerImangeName;	
  } else {
  	bannerImangeName = "<img src=\"images/globalLinkHover/business-solution.jpg\" border=\"0\" alt=\"Welcome to Synesis IT\" />";
  	document.getElementById('bannerImage').innerHTML = bannerImangeName;	
  } 
} 



function preloadTabImages() {
    var images = [];
	var tabs = document.getElementById("buttonContainer") .getElementsByTagName("img");
 	for (var i = 0; i < tabs.length; ++i) {
	    var tab = tabs[i];
 		var img = new Image();
 		img.src = "images/" + tab.getAttribute("id") + "_hover.jpg";
 		images.push(img);
	}
	
	var img1 = new Image();
	img1.src = "images/globalRightLink/globalRightLink_hover.jpg";
	images.push(img1);
	
	var img7 = new Image();
	img7.src = "images/leftMentHoverShap.jpg";
	images.push(img7);
}

function changeButton(buttonPath,buttonObj) {
	buttonObj.src = "images/" + buttonPath;
}

function changeTabImage(imagePath,imageObj) {
	var images = document.getElementById("innerPageContent") .getElementsByTagName("img");
	for (var j = 0; j < images.length; j++)	{
		images[j].src =  'images/' +  images[j].id + '.jpg';
	}
	imageObj.src = 'images/' +  imagePath + '_hover.jpg';
}

function checkLeftMenu() {
	document.getElementById("aboutUs").className = "leftMenuSelected"; 
}

function changeLeftSideBottomImage(leftSideBottomImage) {
	document.getElementById('healthcare').style.display = 'none';
	document.getElementById('manufacture').style.display = 'none';
	document.getElementById('professionalServices').style.display = 'none';
	document.getElementById('publicSector').style.display = 'none';
	document.getElementById(leftSideBottomImage).style.display = '';
}

function changeLeftSideBottomImageOut() {
	document.getElementById('healthcare').style.display = 'none';
	document.getElementById('manufacture').style.display = 'none';
	document.getElementById('professionalServices').style.display = 'none';
	document.getElementById('publicSector').style.display = '';
}

function validate() {
	if(document.frm_Syn_EmailUs.email_add.value=="") {
		alert("Please enter your email address");
		document.frm_Syn_EmailUs.email_add.focus();
		return false;
	} else {
		var mystring= new String(frm_Syn_EmailUs.email_add.value);
		var myregExp=/^\w+((-\w+)|(\.\w+))*\@\w+((\.|-)\w+)*\.\w+$/;
		var answerIdx=mystring.search(myregExp)
		if (answerIdx==-1) {
			alert("Please enter your valid email address");
			document.frm_Syn_EmailUs.email_add.focus();
			return false;
		}
	}
}