var imgs = new Array(31);
imgs[0] = "./images/empresa.gif";     
imgs[1] = "./images/empresa2.gif";     
imgs[2] = "./images/portfolio.gif";
imgs[3] = "./images/portfolio2.gif";     
imgs[4] = "./images/design.gif";
imgs[5] = "./images/design2.gif";     
imgs[6] = "./images/assistencia.gif";     
imgs[7] = "./images/assistencia2.gif";
imgs[8] = "./images/webdesign.gif";     
imgs[9] = "./images/webdesign2.gif";
imgs[10] = "./images/button_info.gif";     
imgs[11] = "./images/button_info2.gif";
imgs[12] = "./images/button_orc.gif";     
imgs[13] = "./images/button_orc2.gif";
imgs[14] = "./images/pedir_ass.gif";     
imgs[15] = "./images/pedir_ass2.gif";
imgs[16] = "./images/verificar1.gif";     
imgs[17] = "./images/verificar2.gif";
imgs[18] = "./images/contrato1.gif";     
imgs[19] = "./images/contrato2.gif";
imgs[20] = "./images/mini_site_button.gif";     
imgs[21] = "./images/mini_site2_button.gif";
imgs[22] = "./images/budget_site_button.gif";     
imgs[23] = "./images/budget_site2_button.gif";
imgs[24] = "./images/pro_site_button.gif";     
imgs[25] = "./images/pro_site2_button.gif";
imgs[26] = "./images/premium_site_button.gif";     
imgs[27] = "./images/premium_site2_button.gif";
imgs[28] = "./images/mapa1.gif";
imgs[29] = "./images/mapa2.gif";    
imgs[30] = "./images/send_cont1.gif";
imgs[31] = "./images/send_cont2.gif";


// preload the images   
function preload() 
{    var tmp = null;    
for (var j = 0; j < imgs.length; j++) 
{      	tmp = imgs[j];      
		imgs[j] = new Image();      
		imgs[j].src = tmp;
	    }
	}   
	void(preload());    
	
// swap images   

function imgSwap(img, swap) {    
	img.src = imgs[swap].src;   
	}