// Define roll states and preload images
var preloadFlag = false;
function preloadImages() {
   if (document.images) {
		oneON = new Image(); oneON.src = 'images/contact_o.gif';
		oneOFF = new Image(); oneOFF.src = 'images/contact.gif';
		twoON = new Image(); twoON.src = 'images/web_o.gif';
		twoOFF = new Image(); twoOFF.src ='images/web.gif';
		threeON = new Image(); threeON.src = 'images/print_o.gif';
		threeOFF = new Image(); threeOFF.src = 'images/print.gif';
		fourON = new Image(); fourON.src = 'images/media_o.gif';
		fourOFF = new Image(); fourOFF.src ='images/media.gif';
		fiveON = new Image(); fiveON.src = 'images/logo_dev_o.gif';
		fiveOFF = new Image(); fiveOFF.src = 'images/logo_dev.gif';
		sixON = new Image(); sixON.src = 'images/case_des_objectives_o.gif';
		sixOFF = new Image(); sixOFF.src ='images/case_des_objectives.gif';
		sevenON = new Image(); sevenON.src = 'images/case_des_challenges_o.gif';
		sevenOFF = new Image(); sevenOFF.src = 'images/case_des_challenges.gif';
		eightON = new Image(); eightON.src = 'images/case_dev_challenges_o.gif';
		eightOFF = new Image(); eightOFF.src ='images/case_dev_challenges.gif';
		nineON = new Image(); nineON.src = 'images/case_of_note_o.gif';
		nineOFF = new Image(); nineOFF.src ='images/case_of_note.gif';
		tenON = new Image(); tenON.src = 'images/case_technology_o.gif';
		tenOFF = new Image(); tenOFF.src ='images/case_technology.gif';
		homeON = new Image(); homeON.src = 'images/home_o.gif';
		homeOFF = new Image(); homeOFF.src ='images/home.gif';
		preloadFlag = true;
  }
}

// Rollover function
function roll() {
	if (document.images) {
		for (var i=0; i<roll.arguments.length; i+=2) {
		document[roll.arguments[i]].src = eval(roll.arguments[i] + roll.arguments[i+1] + ".src");
		}
	}
}

// Function call to pop up window with url, name, width and height parameters
function popWin(url,name,w,h,x,y){
	if (x=="") {
		y = ((screen.height/2)-(h/2))
		x = ((screen.width/2)-(w/2))
	}
	window.name="main";
	window.open(url,name,'width='+w+',height='+h+',top='+y+',left='+x+',menubar=0,scrollbars=1,toolbar=0,location=0,status=0,resizable=0,noresize,directories=0');
}

preloadImages();