// ##LOG: 
// -----------------------------------------------------------------------------------------------
//	17/12/03	bkel			Created.
// -----------------------------------------------------------------------------------------------
// ##TEMPLATE: 
// -----------------------------------------------------------------------------------------------
//	This file contains a function that provides graphic rollover code.
// -----------------------------------------------------------------------------------------------


// [rollImg]
function rollImg ( theImg )
{	
	// Work out the file extention we are working with.
	imageExtArray = theImg.src.split( '.' );
	getVal = imageExtArray.length - 1;
	imageExt = imageExtArray[getVal];	
	
	
	// Split the image source on '/' so we can figure out the image name.
	nameArray = theImg.src.split( '/' );			
	
	// If nameArray has some elements.
	if ( nameArray.length > 0 )
	{	
		// Figure out the current name of the image.
		getVal = nameArray.length - 1;
		imageName = nameArray[getVal];		
		
		// Figure out the image location.
		getVal = ( theImg.src.length - imageName.length);		
		imageLoc = theImg.src.substring( 0, getVal )
		
		overRef = '_over';			
				
		// Roll Image On
		if ( imageName.indexOf( overRef ) != -1 )
		{
			theImageName = imageName.substring(0 , ( imageName.length - ( overRef.length + 1 + imageExt.length ) ) ) + '.' + imageExt;
						
			// mainGraphic Image On	
			try 
			{
				theImg.src = imageLoc + theImageName;
			} catch (e) { }				
					
		}
		// Roll Image Off
		else
		{
			theImageName = imageName.substring(0 , ( imageName.length - ( imageExt.length + 1 ) ) ) + overRef + '.' + imageExt;
						
			// mainGraphic Image Off
			try 
			{
				theImg.src = imageLoc + theImageName;		
			} catch (e) { }
			
		}
		
	}
	
}


function PNGswap ( myID )
{  
   	var strOver  = "";
   	var strOff = "_over";
   	var oSpan = document.getElementById ( myID );
   	var theImg = oSpan.filters(0);
   
	// Work out the file extention we are working with.
	imageExtArray = theImg.src.split( '.' );
	getVal = imageExtArray.length - 1;
	imageExt = imageExtArray[getVal];	

  	// Split the image source on '/' so we can figure out the image name.
	nameArray = theImg.src.split( '/' );				
	
	// If nameArray has some elements.
	if ( nameArray.length > 0 )
	{	
		// Figure out the current name of the image.
		getVal = nameArray.length - 1;
		imageName = nameArray[getVal];		
		
		// Figure out the image location.
		getVal = ( theImg.src.length - imageName.length);		
		imageLoc = theImg.src.substring( 0, getVal );
			
				
		// Roll Image On
		if ( imageName.indexOf('_over') != -1 )
		{
			theImageName = imageName.substring(0 , ( imageName.length - ( 6 + imageExt.length ) ) ) + '.' + imageExt;
						
			// mainGraphic Image On	
			try 
			{
				theImg.src = imageLoc + theImageName;
			} catch (e) {  }				
					
		}
		// Roll Image Off
		else
		{
			theImageName = imageName.substring(0 , ( imageName.length - 4 ) ) + '_over.' + imageExt;
						
			// mainGraphic Image Off
			try 
			{

				theImg.src = imageLoc + theImageName;		
			} catch (e) { }
			
		}
		
	}
   
   	/*if (currentAlphaImg.indexOf(strOff) != -1)
   	{
    	oSpan.filters(0).src = currentAlphaImg.replace(strOff,strOver);
		
	}
   	else
      	oSpan.filters(0).src = currentAlphaImg.replace(strOver,strOff);
	}*/
}