function over(div) {
    div.style.backgroundImage = 'url(/_uploads/image/' + div.id + '_over.jpg)';
    document.getElementById(div.id + '_links').style.display = 'block';
}

function out(div) {
    div.style.backgroundImage = 'url(/_uploads/image/' + div.id + '.jpg)';
    document.getElementById(div.id + '_links').style.display = 'none';
}

	var tabs_array = new Array();
	tabs_array[0] = 'automotive';
	tabs_array[1] = 'chemical';
	tabs_array[2] = 'construction';
	tabs_array[3] = 'electronics';	
	tabs_array[4] = 'food';
	tabs_array[5] = 'steel';	
	tabs_array[6] = 'other';



function switch_tabs(tab){
	for(var i = 0; i < tabs_array.length; i++) {
        if( document.getElementById(tabs_array[i]) ){
			if(i == tab) {
	            document.getElementById(tabs_array[i]).style.display = 'block';
	            document.getElementById(tabs_array[i]+'_link').style.fontWeight = 'bold';
	        } else {
	            document.getElementById(tabs_array[i]).style.display = 'none';
				document.getElementById(tabs_array[i]+'_link').style.fontWeight = 'normal';
	        }
		}
    }
}

/**
 * Sets alpha-blending for transparent png's
 *
 * Internet Explorer being what is and Microsoft's pace at supporting modern file
 * formats (PNG file format; standardized circa. October 1996), this function is
 * designed to convert png's using the document.images array to support
 * transparency using alpha-blending. Unfortunately there is a side effect for
 * this 'fix'; the src attribute value will be lost.
 *
 * @author Jordon Mears, Insivia <jordon@insivia.com>
 * @return  nothing
 * @version 2.0
 */
function correct_png() {
    for(var i = 0; i < document.images.length; i++) {
        var img = document.images[i];
        var img_name = img.src.toLowerCase();
        var img_ext = img_name.substring(img_name.length - 3, img.src.length);

        if(img_ext == 'png') {
            img.style.filter = "progid:DXImageTransform.Microsoft.AlphaImageLoader(src='" + img.src + "', sizingMethod='image')";
            if(img.parentElement.href) {
                img.border = 0;
            }
            img.src = '/_uploads/image/transparent.gif';
        }
    }
}