showModalDialog用法

1.在跳转后的页面加以下代码可以自动调整页面大小
window.onload = function()
    {
        if( document.body.scrollWidth > (window.screen.availWidth-100) ){ 
            window.dialogWidth = (window.screen.availWidth-100).toString() + "px" 
        }else{ 
            window.dialogWidth = (document.body.scrollWidth +50).toString() + "px" 
        }     
        
        if( document.body.scrollHeight > (window.screen.availHeight-70) ){ 
            window.dialogHeight = (window.screen.availHeight-50).toString() + "px" 
        }else{ 
            window.dialogHeight = (document.body.scrollHeight +115).toString() + "px" 
        }     
        window.dialogLeft = ((window.screen.availWidth - document.body.clientWidth) / 2).toString() + "px" 
        window.dialogTop = ((window.screen.availHeight - document.body.clientHeight) / 2).toString() + "px"
    }

2.返回多个参数值
//在原来页面的跳转方法中
 function turn_pyxz(){
var l_Features="dialogHeight:0px;dialogWidth:0px;";
var returnvalue=window.showModalDialog("Invoice_FPSource.html", l_Features);

document.getElementById('fpzldm').value=returnvalue.split(",")[0];
document.getElementById('get_fphm').value=returnvalue.split(",")[1];
//在跳转后的页面的返回值方法中
function get_returnvalue(){
returnValue=form.get_fpzldm.value+","+form.get_fphm.value;
window.close();