// Handles display/hide of image text for simple two page format

	// set to ensure page 1 is displayed at first call 	
	var currentpageno=100
	function SetSimpleTextOn(newpageno)
	{
			// skip all if page not changed
			if (newpageno!==currentpageno)
			{
				// window.alert("In SetSimpleTextOn and current page number is "+currentpageno);
				// switch off current page
				if (document.getElementById("textpage"+currentpageno))
				{
					var oldpage = document.getElementById("textpage"+currentpageno);
					oldpage.style.display = "none";
					oldpage.style.color="fcfcfc";
				}
				// switch on new page 
				currentpageno=newpageno;
				var newpage = document.getElementById("textpage"+newpageno);
				newpage.style.color="fcfcfc";
				newpage.style.display = "inline";
				fadepagetext(newpageno);
			}
	}


// Handles display/hide of image text for extended three page format

	function SetTextOn(newpageno)
	{
			// skip all if page not changed
			if (newpageno!==currentpageno)
			{
				//window.alert("In SetTextOn and current page number is "+currentpageno);
				// switch off current page
				if (document.getElementById("textpage"+currentpageno))
				{
					var oldpage = document.getElementById("textpage"+currentpageno);
					oldpage.style.display = "none";
					oldpage.style.color="fcfcfc";
				}
				// switch on new page 
				currentpageno=newpageno;
				var newpage = document.getElementById("textpage"+newpageno);
				newpage.style.color="fcfcfc";
				newpage.style.display = "inline";
				fadepagetext(newpageno);
				
				// set the button highlights off
				 var pagebutton;
				//window.alert("In SetTextOn and new page number is "+newpageno);
				for (i=1;i<4;i++)
				{
					pagebutton = document.getElementById("pagecontrol"+i);
					pagebutton.src = 'images/pagecontrolimg'+i+'_unselected.jpg';
				}	
				// set the button highlight on for current page
				pagebutton = document.getElementById("pagecontrol"+newpageno);		
				pagebutton.src = 'images/pagecontrolimg'+newpageno+'_selected.jpg';
			}
	}

var hex=252
function fadepagetext(pageno)
{
		var newpage = document.getElementById("textpage"+pageno);
		// window.alert("hex is "+hex); 
		if(hex>2) 
		{ //Set to required final text color - must be shade of gray
			hex-=10; // increase color darkness in each call 
			newpage.style.color="rgb("+hex+","+hex+","+hex+")";
			setTimeout("fadepagetext("+pageno+")",50); 
		}
		else 
		{
		//window.alert("final hex was "+hex);
			hex=252;
		}
}


	/*
	thunderbirdit()
	e-mail constructor	
	*/
function thunderbirdit(name)
{
	if (name=="")
		name="maggiebruce";
	var domain = "@alternative-images.co.uk"
	var myurl = "ma" + "ilto:" + name + domain
	var displaytext = '<img src="../images/winopener/banner_main.jpg"><img id="postbox" src=" ../images/winopener/mailbox.jpg"><br /><a href="'+myurl+'">click here to e-mail me</a>';
	var thunderbirdwin=dhtmlwindow.open('contactwin', 'inline',	displaytext,'Contact Details',
																			'width=440px,height=350px,center=1,resize=0,scrolling=1'); 

}